SpringMVC的返回字符串(JSON)乱码问题，以及Date类型字段转换为json时的问题
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>extjs4</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:beans.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
springmvc-servlet.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd ">
<context:annotation-config />
<context:component-scan base-package="com.iduanyingjie.extjs4.controller" />
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="stringHttpMessageConverter" />
<ref bean="mappingJackson2HttpMessageConverter" />
</list>
</property>
</bean>
<bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/plain;charset=utf-8</value>
</list>
</property>
</bean>
<bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>application/json</value>
</list>
</property>
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
UserController.java:
import java.util.Date;
import java.util.List;
import javax.annotation.Resource;
import net.sf.json.JSONArray;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonDateValueProcessor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.iduanyingjie.extjs4.domain.User;
import com.iduanyingjie.extjs4.service.IUserService;
@Controller
@RequestMapping(value = "/UserController/")
public class UserController {
@Resource(name = "userService")
private IUserService userService;
@RequestMapping(value = "getUserList.do", produces = "text/plain;charset=UTF-8", method = {RequestMethod.GET, RequestMethod.POST })
@ResponseBody
public String getUserList() {
System.out.println("UserController/getUserList");
List<User> userList = userService.findAll();
JsonConfig jsonConfig = new JsonConfig();
jsonConfig.registerJsonValueProcessor(Date.class, new JsonDateValueProcessor());
return "{\"total\":"
+ userList.size()
+ ", \"rows\":"
+ JSONArray.fromObject(userList, jsonConfig).toString() + "}";
}
@RequestMapping(value = "save.do", method = { RequestMethod.GET, RequestMethod.POST })
@ResponseBody
public void save(@RequestBody User user) {
System.out.println(user);
}
}
JsonDateValueProcessor.java
package net.sf.json.processors;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import net.sf.json.JsonConfig;
public class JsonDateValueProcessor implements JsonValueProcessor {
private String datePattern = "yyyy-MM-dd";
private SimpleDateFormat sdf = new SimpleDateFormat(datePattern, Locale.UK);
public JsonDateValueProcessor() {
super();
}
public JsonDateValueProcessor(String format) {
super();
this.datePattern = format;
}
@Override
public Object processArrayValue(Object value, JsonConfig jsonConfig) {
return process(value);
}
@Override
public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {
return process(value);
}
private Object process(Object value) {
try {
if (value instanceof Date) {
return sdf.format((Date) value);
}
return value == null ? "" : value.toString();
} catch (Exception e) {
return "";
}
}
public String getDatePattern() {
return datePattern;
}
public void setDatePattern(String pDatePattern) {
datePattern = pDatePattern;
}
}