一:概述
SSM框架在项目开发中经常使用到,相比于SSH框架,它在仅几年的开发中运用的更加广泛。
- Spring作为一个轻量级的框架,有很多的拓展功能,最主要的我们一般项目使用的就是IOC和AOP。
- SpringMVC是Spring实现的一个Web层,相当于Struts的框架,但是比Struts更加灵活和强大!
- Mybatis是 一个持久层的框架,在使用上相比Hibernate更加灵活,可以控制sql的编写,使用 XML或注解进行相关的配置!
根据上面的描述,学习SSM框架就非常的重要了!
二:搭建一个SSM的过程
然后直接配置 pom.xml文件中的包依赖!
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.dufy</groupId>
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<artifactId>ssm</artifactId>
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<packaging>war</packaging>
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<version>0.0.1-SNAPSHOT</version>
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<name>ssmDemo</name>
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<url>http://maven.apache.org</url>
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<properties>
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<spring.version>4.0.5.RELEASE</spring.version>
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<mybatis.version>3.2.1</mybatis.version>
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<slf4j.version>1.6.6</slf4j.version>
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<log4j.version>1.2.12</log4j.version>
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<mysql.version>5.1.35</mysql.version>
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</properties>
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<dependencies>
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<!-- 添加Spring依赖 -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-core</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context-support</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-aop</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-aspects</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-tx</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-jdbc</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-web</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<!--spring单元测试依赖 -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-test</artifactId>
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<version>${spring.version}</version>
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<scope>test</scope>
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</dependency>
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<!-- spring webmvc相关jar -->
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-webmvc</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-web</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<!-- mysql驱动包 -->
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>${mysql.version}</version>
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</dependency>
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<!-- alibaba data source 相关jar包-->
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>druid</artifactId>
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<version>0.2.23</version>
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</dependency>
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<!-- alibaba fastjson 格式化对 -->
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>fastjson</artifactId>
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<version>1.1.41</version>
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</dependency>
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<!-- logback start -->
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<dependency>
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<groupId>log4j</groupId>
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<artifactId>log4j</artifactId>
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<version>${log4j.version}</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>${slf4j.version}</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<version>1.1.2</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-core</artifactId>
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<version>1.1.2</version>
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</dependency>
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<dependency>
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<groupId>org.logback-extensions</groupId>
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<artifactId>logback-ext-spring</artifactId>
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<version>0.1.1</version>
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</dependency>
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<!--mybatis依赖 -->
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<dependency>
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<groupId>org.mybatis</groupId>
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<artifactId>mybatis</artifactId>
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<version>${mybatis.version}</version>
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</dependency>
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<!-- mybatis/spring包 -->
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<dependency>
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<groupId>org.mybatis</groupId>
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<artifactId>mybatis-spring</artifactId>
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<version>1.2.0</version>
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</dependency>
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<!-- 添加servlet3.0核心包 -->
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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<version>3.0.1</version>
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</dependency>
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<dependency>
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<groupId>javax.servlet.jsp</groupId>
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<artifactId>javax.servlet.jsp-api</artifactId>
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<version>2.3.2-b01</version>
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</dependency>
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<!-- jstl -->
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>jstl</artifactId>
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<version>1.2</version>
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</dependency>
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<!--单元测试依赖 -->
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>3.8.1</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<finalName>ssmDemo</finalName>
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</build>
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</project>
jdbc.properties
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jdbc_driverClassName =com.mysql.jdbc.Driver
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jdbc_url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf8
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jdbc_username=root
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jdbc_password=root
applicationContext.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:tx="http://www.springframework.org/schema/tx"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
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http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
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http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
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">
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<!-- 1.配置jdbc文件 -->
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<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
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<property name="locations" value="classpath:jdbc.properties"/>
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</bean>
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<!-- 2.扫描的包路径,这里不扫描被@Controller注解的类 --><!--使用<context:component-scan/> 可以不在配置<context:annotation-config/> -->
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<context:component-scan base-package="org.ssm.dufy">
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<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
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</context:component-scan>
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<import resource="classpath:spring-mybatis.xml" />
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</beans>
spring-mybatis.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:tx="http://www.springframework.org/schema/tx"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
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http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
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http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
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">
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<!-- 1.配置jdbc文件 -->
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<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
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<property name="locations" value="classpath:jdbc.properties"/>
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</bean>
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<!-- 2.扫描的包路径,这里不扫描被@Controller注解的类 --><!--使用<context:component-scan/> 可以不在配置<context:annotation-config/> -->
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<context:component-scan base-package="org.ssm.dufy">
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<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
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</context:component-scan>
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<import resource="classpath:spring-mybatis.xml" />
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</beans>
spring-mybatis.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:tx="http://www.springframework.org/schema/tx"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
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http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
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http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
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">
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<!-- 1.配置jdbc文件 -->
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<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
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<property name="locations" value="classpath:jdbc.properties"/>
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</bean>
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<!-- 2.扫描的包路径,这里不扫描被@Controller注解的类 --><!--使用<context:component-scan/> 可以不在配置<context:annotation-config/> -->
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<context:component-scan base-package="org.ssm.dufy">
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<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
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</context:component-scan>
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<import resource="classpath:spring-mybatis.xml" />
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</beans>
spring-mybatis.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:tx="http://www.springframework.org/schema/tx"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
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http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
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http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
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">
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<!-- 1.配置jdbc文件 -->
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<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
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<property name="locations" value="classpath:jdbc.properties"/>
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</bean>
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<!-- 2.扫描的包路径,这里不扫描被@Controller注解的类 --><!--使用<context:component-scan/> 可以不在配置<context:annotation-config/> -->
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<context:component-scan base-package="org.ssm.dufy">
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<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
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</context:component-scan>
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<import resource="classpath:spring-mybatis.xml" />
- </beans>
spring-mybatis.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
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http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
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http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
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<!-- 3.配置数据源 ,使用的alibba的数据库-->
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<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
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<!-- 基本属性 url、user、password -->
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<property name="driverClassName" value="${jdbc_driverClassName}"/>
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<property name="url" value="${jdbc_url}"/>
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<property name="username" value="${jdbc_username}"/>
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<property name="password" value="${jdbc_password}"/>
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<!-- 配置初始化大小、最小、最大 -->
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<property name="initialSize" value="10"/>
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<property name="minIdle" value="10"/>
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<property name="maxActive" value="50"/>
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<!-- 配置获取连接等待超时的时间 -->
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<property name="maxWait" value="60000"/>
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<!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
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<property name="timeBetweenEvictionRunsMillis" value="60000" />
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<!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
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<property name="minEvictableIdleTimeMillis" value="300000" />
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<property name="validationQuery" value="SELECT 'x'" />
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<property name="testWhileIdle" value="true" />
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<property name="testOnBorrow" value="false" />
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<property name="testOnReturn" value="false" />
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<!-- 打开PSCache,并且指定每个连接上PSCache的大小 如果用Oracle,则把poolPreparedStatements配置为true,mysql可以配置为false。-->
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<property name="poolPreparedStatements" value="false" />
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<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
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<!-- 配置监控统计拦截的filters -->
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<property name="filters" value="wall,stat" />
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</bean>
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<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
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<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
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<property name="dataSource" ref="dataSource" />
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<!-- 自动扫描mapping.xml文件 -->
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<property name="mapperLocations" value="classpath:org/ssm/dufy/mapper/*.xml"></property>
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</bean>
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<!-- DAO接口所在包名,Spring会自动查找其下的类 ,自动扫描了所有的XxxxMapper.xml对应的mapper接口文件,只要Mapper接口类和Mapper映射文件对应起来就可以了-->
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<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
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<property name="basePackage" value="org.ssm.dufy.dao" />
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<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
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</bean>
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<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
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<!-- 配置事务管理器 -->
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<bean id="transactionManager"
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class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
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<property name="dataSource" ref="dataSource" />
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</bean>
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<!--======= 事务配置 End =================== -->
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<!-- 配置基于注解的声明式事务 -->
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<!-- enables scanning for @Transactional annotations -->
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<tx:annotation-driven transaction-manager="transactionManager" />
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</beans>
spring-mvc.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:p="http://www.springframework.org/schema/p"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xsi:schemaLocation="
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context-3.2.xsd
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http://www.springframework.org/schema/mvc
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http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
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<!-- 扫描controller(controller层注入) -->
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<context:component-scan base-package="org.ssm.dufy.web" use-default-filters="false">
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<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
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</context:component-scan>
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<mvc:annotation-driven />
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<!-- 内容协商管理器 -->
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<!--1、首先检查路径扩展名(如my.pdf);2、其次检查Parameter(如my?format=pdf);3、检查Accept Header-->
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<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
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<!-- 扩展名至mimeType的映射,即 /user.json => application/json -->
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<property name="favorPathExtension" value="true"/>
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<!-- 用于开启 /userinfo/123?format=json 的支持 -->
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<property name="favorParameter" value="true"/>
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<property name="parameterName" value="format"/>
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<!-- 是否忽略Accept Header -->
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<property name="ignoreAcceptHeader" value="false"/>
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<property name="mediaTypes"> <!--扩展名到MIME的映射;favorPathExtension, favorParameter是true时起作用 -->
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<value>
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json=application/json
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xml=application/xml
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html=text/html
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</value>
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</property>
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<!-- 默认的content type -->
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<property name="defaultContentType" value="text/html"/>
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</bean>
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<!-- 当在web.xml 中 DispatcherServlet使用 <url-pattern>/</url-pattern> 映射时,能映射静态资源 -->
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<mvc:default-servlet-handler />
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<!-- 静态资源映射 -->
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<mvc:resources mapping="/static/**" location="/WEB-INF/static/"/>
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<!-- 对模型视图添加前后缀 -->
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<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
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p:prefix="/WEB-INF/jsp/" p:suffix=".jsp"/>
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</beans>
web.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app>
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<display-name>SSM-DEMO</display-name>
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<!-- 读取spring配置文件 -->
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<context-param>
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<param-name>contextConfigLocation</param-name>
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<param-value>classpath:applicationContext.xml</param-value>
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</context-param>
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<!-- 设计路径变量值
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<context-param>
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<param-name>webAppRootKey</param-name>
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<param-value>springmvc.root</param-value>
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</context-param>
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-->
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<!-- Spring字符集过滤器 -->
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<filter>
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<filter-name>SpringEncodingFilter</filter-name>
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<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
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<init-param>
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<param-name>encoding</param-name>
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<param-value>UTF-8</param-value>
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</init-param>
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<init-param>
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<param-name>forceEncoding</param-name>
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<param-value>true</param-value>
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</init-param>
-
</filter>
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<filter-mapping>
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<filter-name>SpringEncodingFilter</filter-name>
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<url-pattern>/*</url-pattern>
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</filter-mapping>
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<!-- 添加日志监听器 -->
-
<context-param>
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<param-name>logbackConfigLocation</param-name>
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<param-value>classpath:logback.xml</param-value>
-
</context-param>
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<listener>
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<listener-class>ch.qos.logback.ext.spring.web.LogbackConfigListener</listener-class>
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</listener>
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<listener>
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<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
-
</listener>
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<!-- springMVC核心配置 -->
-
<servlet>
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<servlet-name>dispatcherServlet</servlet-name>
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<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
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<init-param>
-
<param-name>contextConfigLocation</param-name>
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<!--spingMVC的配置路径 -->
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<param-value>classpath:spring-mvc.xml</param-value>
-
</init-param>
-
<load-on-startup>1</load-on-startup>
-
</servlet>
-
<!-- 拦截设置 -->
-
<servlet-mapping>
-
<servlet-name>dispatcherServlet</servlet-name>
-
<url-pattern>/</url-pattern>
-
</servlet-mapping>
-
<welcome-file-list>
-
<welcome-file>index.jsp</welcome-file>
-
</welcome-file-list>
-
</web-app>
7:编写Controller,和对应得业务界面
新增UserController ,通过参数传递uid获取用户,若用户存在,跳转到showName.jsp ,若用户不存在,则跳转到error.jsp,并返回提示信息!
-
package org.ssm.dufy.web;
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import javax.servlet.http.HttpServletRequest;
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import org.springframework.beans.factory.annotation.Autowired;
-
import org.springframework.stereotype.Controller;
-
import org.springframework.ui.Model;
-
import org.springframework.web.bind.annotation.RequestMapping;
-
import org.springframework.web.bind.annotation.RequestMethod;
-
import org.springframework.web.bind.annotation.RequestParam;
-
import org.springframework.web.servlet.ModelAndView;
-
import org.ssm.dufy.entity.User;
-
import org.ssm.dufy.service.IUserService;
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@Controller
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public class UserController {
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@Autowired
-
private IUserService userService;
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@RequestMapping(value="/showname",method=RequestMethod.GET)
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public String showUserName(@RequestParam("uid") int uid,HttpServletRequest request,Model model){
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System.out.println("showname");
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User user = userService.getUserById(uid);
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if(user != null){
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request.setAttribute("name", user.getUserName());
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model.addAttribute("mame", user.getUserName());
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return "showName";
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}
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request.setAttribute("error", "没有找到该用户!");
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return "error";
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}
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}