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1.后台POJO类接收前端数据,Integer类型属性数据接收不到
POJO类:
public class User {
private String username;
private Integer age;
private String address;
getter/setter方法
}
前端:
$("#showTooltips").click(function() {
var formObject = {};
var formArray =$("#userInfo").serializeArray();
$.each(formArray,function(i,item){
formObject[item.name] = item.value;
});
$.ajax({
url:"user/addUser",
type:"post",
contentType: "application/json; charset=utf-8",
data: JSON.stringify(formObject),
dataType: "json",
success:function(data){
alert(data.msg);
},
error:function(e){
alert("错误!!");
}
});
});
后台接收:
@RequestMapping(value = "/addUser", method =RequestMethod.POST)
@ResponseBody
public JSONObject addUser(@RequestBody User user) {
JSONObject jsonObject = new JSONObject();
if(user.getUsername() == null) {
jsonObject.put("msg", "添加人员失败");
} else {
jsonObject.put("msg", "添加人员成功");
}
return jsonObject;
}
因为在springmvc配置文件中
<!--避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
解决方法:
Spring4.1.1去掉了MappingJacksonHttpMessageConverter
spring-mvc配置将MappingJacksonHttpMessageConverter改成MappingJackson2HttpMessageConverter,
Maven对org.codehaus.jackson的引用,改用 com.fasterxml.jackson.core
MappingJacksonHttpMessageConverter这个类是过时的,
配置文件改为
<!--避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
pom.xml
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.5.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.1</version>
</dependency>