Question

Ajax 请求返回字符串乱码问题：

js：
//获取接收人名称串
suggest.getUserNames = function(ids){
alert(1);
$.ajax({
type : "GET",
url : getRootPath()+"/ic/suggest/getUserNames.action",
contentType: "application/json;charset=GBK",
data : {"ids": ids},
//dataType : "json",
success : function(data) {
alert(data);
select2InitEchoToPerson("suggestForm #recipientIds-recipientIds",eval(data));
}
})
};
后台拼串：
public String getUserNames(String ids) throws Exception{

//根据用户id拼接的字符串去查找对应的用户名称，然后拼成字符串返回到实体类中带入页面
StringBuffer recipientNames = new StringBuffer("[");
List<User> userList = userService.queryUserByIds(ids);
if(userList != null){
for (User user : userList) {
recipientNames.append("{id:").append(user.getId())
.append(",");
recipientNames.append("text:\"")
.append(user.getDisplayName()).append("\"}");
recipientNames.append(",");
}
if (recipientNames.length() > 0 && recipientNames.charAt(recipientNames.length() - 1) == ',') {
recipientNames.deleteCharAt(recipientNames.length() - 1);
recipientNames.append("]");
}
}
return recipientNames.toString();
}

返回的data为[{id:14,text:???}] 乱码了，怎么解决
UTF-8 也试了 还是乱码

Answer 1

application/json;charset=UTF-8

追问

不好用啊。。。试过了

Answer 2

在后台请求的第一行加上这句"response.setCharacterEncoding("utf-8")"，但是通常的情况是在web.xml中加字符过滤器，

<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>
		<init-param>  
	        <param-name>forceEncoding</param-name>  
	        <param-value>true</param-value>  
    	</init-param>
	</filter>
	<filter-mapping>  
	   <filter-name>characterEncodingFilter</filter-name>  
	   <url-pattern>/*</url-pattern>  
	</filter-mapping>

希望能这两个方法能帮到你，有什么问题，欢迎交流。

追问

后台用的springMVC注解的形式，没有response的

追答

你把HttpServletResponse response当成参数传到方法里不就行了，例如:

@RequestMapping(value="testRequest") 
public String businessShop(HttpServletResponse response, HttpServletRequest request){
response.setCharacterEncoding("utf-8");
//业务逻辑(这个response是直接能用的)
}