在服务器端取得客户端传递过来的JSON字符串，转成JSON对象并取值

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1. 配置web.xml 配置字符编码过滤器

<filter-name>encodingFilter</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>encodingFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<servlet-name>springMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>springMVC</servlet-name>

<url-pattern>*.spring</url-pattern>

</servlet-mapping>

2. 新建sendAjax.jsp

<script src="jquery-1.8.3.js"></script><script type="text/javascript">function userinfo(username,password){this.username=username;this.password=password;}function sendAjax(){var userinfoRef=new userinfo("王淑雅","wsy");var jsonStringRef=JSON.stringify(userinfoRef);$.post("getJSONString.spring?t="+new Date().getTime(),{jsonString:jsonStringRef});}</script><title>sendAjax.jsp</title></head><body><input type="button" onclick="sendAjax()" value="onclick"></body>

3.创建控制层GetJSONString.java

@Controller

public class GetJSONString{

@RequestMapping(value="getJSONString")

public StringgetJSONString(@RequestParam("jsonString")StringjsonString){

JSONObject object =JSONObject.fromObject(jsonString);

System.out.println(object.get("username"));

System.out.println(object.get("password"));

return "test.jsp"; }

}

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