springboot 项目的操作相关解释


Application.properties 中
#指定端口号
server.port=8087
#指定访问路径必须以/crud/xxx  开始
server.servlet.context-path=/crud
#指定编码格式
server.tomcat.uri-encoding=UTF-8
#指定日期格式        
spring.mvc.date-format=yyyy-MM-dd

# 禁用缓存
spring.thymeleaf.cache=false 

# 国际化配置文件（包名.基础名）
spring.messages.basename=i18n.login

pom 文件中需要加上自己需要的依赖：如

    <!--引入jquery-webjar-->
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>jquery</artifactId>
            <version>3.3.1</version>
        </dependency>

        <!--引入bootstrap-->
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>bootstrap</artifactId>
            <version>4.0.0</version>
        </dependency>

静态页面不要放在静态文件夹下，会得不到模板引擎的解析需要放在

首先就是要访问我们的首页，这是可以指定的首先可以写一个方法这时有两种方法

（1）不推荐在controller中写上一个方法

 @RequestMapping({"/"，"/index.html"})
    public String index(){
    //模板引擎会自动进行拼写自动加上.html
        return "login";
    }

（2）加上视图映射 viewControlle

手动写上一个配置类使用视图映射

因为WebMvcConfigurerAdapter 在Spring5.0已被废弃所以博主推荐的两种方式https://blog.csdn.net/lenkvin/article/details/79482205

1 直接实现WebMvcConfigurer （官方推荐）

@Configuration
public class WebMvcConfg implements WebMvcConfigurer {

    //todo

}

2 直接继承WebMvcConfigurationSupport

@Configuration
public class WebMvcConfg extends WebMvcConfigurationSupport {

        //todo

}

使用第一种方法

说下默认映射的文件夹有：

classpath:/META-INF/resources

classpath:/resources
classpath:/static
classpath:/public

上面这几个都是静态资源的映射路径，优先级顺序为：META-INF/resources > resources > static > public

我们可以通过修改spring.mvc.static-path-pattern来修改默认的映射**

具体信息https://www.cnblogs.com/java-synchronized/p/7091723.html

对login.html 页面的修改

th:text是对标签体中的修改

th:text="#{login.password}

而复选框是字节数的没有标签体所以使用

[[#{login.remember}]]

注册国际化标准i18N

别忘了在配置文件中加上

# 国际化配置文件（包名.基础名）
spring.messages.basename=i18n.login

放行静态资源

 registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**").excludePathPatterns("/login.html","/","/webjars/**","/user/login","/static/**");

=====================================================================================================================================

springboot的基础入门

libraries 库（maven自定下载的jar包）

compiler.xml 编译器（主要用于maven初始化的编译）

misc.xml(混乱的，多种多样的)

modules.xml(模块的xml)

thriftCompiler.xml（节约，节俭）

workspace.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="ChangeListManager">
    <list default="true" id="1205bb8f-51e7-4e4d-bf0c-80e4ab858e97" name="Default Changelist" comment="" />
    <ignored path="$PROJECT_DIR$/out/" />
    <ignored path="$PROJECT_DIR$/target/" />
    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
    <option name="SHOW_DIALOG" value="false" />
    <option name="HIGHLIGHT_CONFLICTS" value="true" />
    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
    <option name="LAST_RESOLUTION" value="IGNORE" />
  </component>
  <component name="FUSProjectUsageTrigger">
    <session id="1908026401">
      <usages-collector id="statistics.lifecycle.project">
        <counts>
          <entry key="project.closed" value="1" />
          <entry key="project.open.time.1" value="1" />
          <entry key="project.open.time.6" value="1" />
          <entry key="project.opened" value="2" />
        </counts>
      </usages-collector>
      <usages-collector id="statistics.file.types.open">
        <counts>
          <entry key="IDEA_MODULE" value="2" />
          <entry key="JAVA" value="1" />
          <entry key="Markdown" value="1" />
          <entry key="PLAIN_TEXT" value="3" />
          <entry key="Properties" value="1" />
          <entry key="XML" value="11" />
        </counts>
      </usages-collector>
    </session>
  </component>
  <component name="FileEditorManager">
    <leaf>
      <file pinned="false" current-in-tab="false">
        <entry file="file://$PROJECT_DIR$/.idea/libraries/Maven__ch_qos_logback_logback_classic_1_2_3.xml">
          <provider selected="true" editor-type-id="text-editor" />
        </entry>
      </file>
      <file pinned="false" current-in-tab="false">
        <entry file="file://$PROJECT_DIR$/.idea/compiler.xml">
          <provider selected="true" editor-type-id="text-editor">
            <state relative-caret-position="306">
              <caret line="17" column="26" selection-start-line="17" selection-start-column="26" selection-end-line="17" selection-end-column="26" />
            </state>
          </provider>
        </entry>
      </file>
      <file pinned="false" current-in-tab="true">
        <entry file="file://$PROJECT_DIR$/.idea/misc.xml">
          <provider selected="true" editor-type-id="text-editor">
            <state relative-caret-position="216">
              <caret line="12" column="10" lean-forward="true" selection-start-line="12" selection-start-column="10" selection-end-line="12" selection-end-column="10" />
            </state>
          </provider>
        </entry>
      </file>
    </leaf>
  </component>
  <component name="JsBuildToolGruntFileManager" detection-done="true" sorting="DEFINITION_ORDER" />
  <component name="JsBuildToolPackageJson" detection-done="true" sorting="DEFINITION_ORDER" />
  <component name="JsGulpfileManager">
    <detection-done>true</detection-done>
    <sorting>DEFINITION_ORDER</sorting>
  </component>
  <component name="ProjectFrameBounds" extendedState="6">
    <option name="x" value="-158" />
    <option name="y" value="50" />
    <option name="width" value="729" />
    <option name="height" value="783" />
  </component>
  <component name="ProjectView">
    <navigator proportions="" version="1">
      <foldersAlwaysOnTop value="true" />
    </navigator>
    <panes>
      <pane id="Scope" />
      <pane id="PackagesPane" />
      <pane id="ProjectPane">
        <subPane>
          <expand>
            <path>
              <item name="01-example" type="b2602c69:ProjectViewProjectNode" />
              <item name="01-example" type="462c0819:PsiDirectoryNode" />
            </path>
            <path>
              <item name="01-example" type="b2602c69:ProjectViewProjectNode" />
              <item name="01-example" type="462c0819:PsiDirectoryNode" />
              <item name=".idea" type="462c0819:PsiDirectoryNode" />
            </path>
            <path>
              <item name="01-example" type="b2602c69:ProjectViewProjectNode" />
              <item name="01-example" type="462c0819:PsiDirectoryNode" />
              <item name=".mvn" type="462c0819:PsiDirectoryNode" />
            </path>
            <path>
              <item name="01-example" type="b2602c69:ProjectViewProjectNode" />
              <item name="01-example" type="462c0819:PsiDirectoryNode" />
              <item name=".mvn" type="462c0819:PsiDirectoryNode" />
              <item name="wrapper" type="462c0819:PsiDirectoryNode" />
            </path>
          </expand>
          <select />
        </subPane>
      </pane>
    </panes>
  </component>
  <component name="PropertiesComponent">
    <property name="WebServerToolWindowFactoryState" value="false" />
    <property name="android.sdk.path" value="D:/SDK" />
    <property name="aspect.path.notification.shown" value="true" />
    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1556162342378" />
    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
    <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
    <property name="nodejs_npm_path_reset_for_default_project" value="true" />
    <property name="settings.editor.selected.configurable" value="File.Encoding" />
  </component>
  <component name="RunDashboard">
    <option name="ruleStates">
      <list>
        <RuleState>
          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
        </RuleState>
        <RuleState>
          <option name="name" value="StatusDashboardGroupingRule" />
        </RuleState>
      </list>
    </option>
  </component>
  <component name="RunManager">
    <configuration name="Application" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot">
      <module name="01-example" />
      <option name="SPRING_BOOT_MAIN_CLASS" value="com.example.Application" />
      <method v="2">
        <option name="Make" enabled="true" />
      </method>
    </configuration>
  </component>
  <component name="SvnConfiguration">
    <configuration />
  </component>
  <component name="TaskManager">
    <task active="true" id="Default" summary="Default task">
      <changelist id="1205bb8f-51e7-4e4d-bf0c-80e4ab858e97" name="Default Changelist" comment="" />
      <created>1552830985946</created>
      <option name="number" value="Default" />
      <option name="presentableId" value="Default" />
      <updated>1552830985946</updated>
      <workItem from="1552830990066" duration="127000" />
      <workItem from="1556158361283" duration="3805000" />
    </task>
    <servers />
  </component>
  <component name="TimeTrackingManager">
    <option name="totallyTimeSpent" value="3932000" />
  </component>
  <component name="ToolWindowManager">
    <frame x="-8" y="-8" width="1382" height="744" extended-state="6" />
    <editor active="true" />
    <layout>
      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.21331316" />
      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
      <window_info id="Designer" order="2" />
      <window_info id="JRebel" order="3" side_tool="true" />
      <window_info id="Image Layers" order="4" />
      <window_info id="UI Designer" order="5" />
      <window_info id="Favorites" order="6" side_tool="true" />
      <window_info id="Capture Tool" order="7" />
      <window_info id="Web" order="8" side_tool="true" />
      <window_info anchor="bottom" id="Message" order="0" />
      <window_info anchor="bottom" id="Find" order="1" />
      <window_info anchor="bottom" id="Run" order="2" />
      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
      <window_info anchor="bottom" id="TODO" order="6" />
      <window_info anchor="bottom" id="Spring" order="7" />
      <window_info anchor="bottom" id="Terminal" order="8" />
      <window_info anchor="bottom" id="Event Log" order="9" side_tool="true" />
      <window_info anchor="bottom" id="Java Enterprise" order="10" />
      <window_info anchor="bottom" id="Database Changes" order="11" show_stripe_button="false" />
      <window_info anchor="bottom" id="Version Control" order="12" show_stripe_button="false" />
      <window_info anchor="bottom" id="JRebel Console" order="13" side_tool="true" />
      <window_info anchor="right" id="SciView" />
      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
      <window_info anchor="right" id="Palette" order="3" />
      <window_info anchor="right" id="Capture Analysis" order="4" />
      <window_info anchor="right" id="Maven Projects" order="5" />
      <window_info anchor="right" id="Database" order="6" />
      <window_info anchor="right" id="Palette&#9;" order="7" />
      <window_info anchor="right" id="Theme Preview" order="8" />
      <window_info anchor="right" id="Redis Servers" order="9" />
      <window_info anchor="right" id="Bean Validation" order="10" />
    </layout>
  </component>
  <component name="TypeScriptGeneratedFilesManager">
    <option name="version" value="1" />
  </component>
  <component name="VcsContentAnnotationSettings">
    <option name="myLimit" value="2678400000" />
  </component>
  <component name="editorHistoryManager">
    <entry file="file://$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_context_5_1_5_RELEASE.xml">
      <provider selected="true" editor-type-id="text-editor" />
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/modules.xml">
      <provider selected="true" editor-type-id="text-editor" />
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/thriftCompiler.xml">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="90">
          <caret line="5" column="10" lean-forward="true" selection-start-line="5" selection-start-column="10" selection-end-line="5" selection-end-column="10" />
        </state>
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/.mvn/wrapper/MavenWrapperDownloader.java">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="-1018">
          <caret line="33" column="29" selection-start-line="33" selection-start-column="25" selection-end-line="33" selection-end-column="29" />
          <folding>
            <element signature="e#0#4628#0" expanded="true" />
          </folding>
        </state>
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/.mvn/wrapper/maven-wrapper.properties">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="18">
          <caret line="1" selection-start-line="1" selection-end-line="1" />
        </state>
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/encodings.xml">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="36">
          <caret line="2" column="17" selection-start-line="2" selection-start-column="17" selection-end-line="2" selection-end-column="17" />
        </state>
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/mvnw.cmd">
      <provider selected="true" editor-type-id="text-editor" />
    </entry>
    <entry file="file://$PROJECT_DIR$/.gitignore">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="-45" />
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/mvnw">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="-3024" />
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/HELP.md">
      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
        <state split_layout="SPLIT">
          <first_editor relative-caret-position="90">
            <caret line="5" column="56" lean-forward="true" selection-start-line="5" selection-start-column="53" selection-end-line="5" selection-end-column="56" />
          </first_editor>
          <second_editor />
        </state>
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/01-example.iml">
      <provider selected="true" editor-type-id="text-editor" />
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/libraries/Maven__com_fasterxml_jackson_core_jackson_core_2_9_8.xml">
      <provider selected="true" editor-type-id="text-editor" />
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/libraries/Maven__ch_qos_logback_logback_classic_1_2_3.xml">
      <provider selected="true" editor-type-id="text-editor" />
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/compiler.xml">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="306">
          <caret line="17" column="26" selection-start-line="17" selection-start-column="26" selection-end-line="17" selection-end-column="26" />
        </state>
      </provider>
    </entry>
    <entry file="file://$PROJECT_DIR$/.idea/misc.xml">
      <provider selected="true" editor-type-id="text-editor">
        <state relative-caret-position="216">
          <caret line="12" column="10" lean-forward="true" selection-start-line="12" selection-start-column="10" selection-end-line="12" selection-end-column="10" />
        </state>
      </provider>
    </entry>
  </component>
  <component name="masterDetails">
    <states>
      <state key="ProjectJDKs.UI">
        <settings>
          <last-edited>1.8</last-edited>
          <splitter-proportions>
            <option name="proportions">
              <list>
                <option value="0.2" />
              </list>
            </option>
          </splitter-proportions>
        </settings>
      </state>
    </states>
  </component>
</project>

workspace.xml

下面介绍.mvn

springboot中的.mvn主要用于版本切换因为maven的版本和插件配合并不是那么完美，.mvn为解决这个问题有一个第三方的插件wrapper可以使用

properties文件中记录你要使用的maven版本当用户执行mvn的clear命令时发现当前用户使用的maven版本和用户期望的版本不一样那么就下载期望的maven版本。

.gitignore 的作用用于和git官网

demo.iml idea工程的配置文件是当前project的一些配置信息

4.yml文件中的值不能以*开头，可以用 "*" 加个引号开头。

接下来解析配置文件

pom文件 
  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

它的父项目是

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>2.1.3.RELEASE</version>
    <relativePath>../../spring-boot-dependencies</relativePath>
</parent>
他来真正管理Spring Boot应用里面的所有依赖版本；

Spring Boot的版本仲裁中心；
以后我们导入依赖默认是不需要写版本；（没有在dependencies里面管理的依赖自然需要声明版本号）

简化部署

<!‐‐ 这个插件，可以将应用打包成一个可执行的jar包；‐‐>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring‐boot‐maven‐plugin</artifactId>
</plugin>
</plugins>
</build>

将这个应用打成jar包，直接使用java -jar的命令进行执行；

//@SpringBootApplication 来标注一个主程序类，说明这是一个Spring Boot应用
@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}
@SpringBootApplication: Spring Boot应用标注在某个类上说明这个类是SpringBoot的主配置类，SpringBoot就应该运行这个类的main方法来启动SpringBoot应用。

2、启动器spring-boot-starter-web：spring-boot-starter：spring-boot场景启动器；
帮我们导入了web模块正常运行所依赖的组件；Spring Boot将所有的功能场景都抽取出来，做成一个个的starters（启动器），
只需要在项目里面引入这些starter相关场景的所有依赖都会导入进来。
要用什么功能就导入什么场景的启动器
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring‐boot‐starter‐web</artifactId>
</dependency>12

springboot中配置文件主启动类配置中的注解
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@SpringBootConfiguration
@EnableAutoConfiguration
@ComponentScan(excludeFilters = {
        @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class),
        @Filter(type = FilterType.CUSTOM, classes = AutoConfigurationExcludeFilter.class) })
public @interface SpringBootApplication {

@SpringBootConfiguration:Spring Boot的配置类；标注在某个类上，表示这是一个Spring Boot的配置类；

@Configuration:配置类上来标注这个注解；配置类 ----- 配置文件；配置类也是容器中的一个组件；@Component

@EnableAutoConfiguration：开启自动配置功能；以前我们需要配置的东西，Spring Boot帮我们自动配置；

@EnableAutoConfiguration告诉SpringBoot开启自动配置功能；这样自动配置才能生

EnableAutoConfiguration 中的注解
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@AutoConfigurationPackage
@Import(AutoConfigurationImportSelector.class)
public @interface EnableAutoConfiguration {