ajax 调用action方法 ,返回一个对象的list列表，调用成功后循环遍历

js主要代码：

function test(){

var url = "${pageContext.request.contextPath}/elecRoleAction!edit.action"; 

$.ajax({ 

url:url, 

type:'post', //数据发送方式 

dataType:'json', //接受数据格式 (这里有很多,常用的有html,xml,js,json) 

data:, //要传递的数据 

error: function(){ //失败 

alert('Error loading document'); 

}, 

success: function(msg){ //成功 

alert("服务器返回数据如下：");

for(var i = 0;i<msg.length;i++){

var mm = msg[i];

alert("userName is:"+mm.userName+"  password is:"+mm.pasd);

}

} 

}); 

}

java主要代码：

public class ElecRoleAction extends BaseAction {

public void edit() throws IOException{

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

// 需要导入gson包；import com.google.gson.JsonObject;

JsonObject jsonObj = new JsonObject();

jsonObj.addProperty("userName", "hello");

jsonObj.addProperty("pasd", "12345");

JsonObject jsonObj2 = new JsonObject();

jsonObj2.addProperty("userName", "ajax");

jsonObj2.addProperty("pasd", "678910");

List<JsonObject> jsonList = new ArrayList<JsonObject>();

jsonList.add(jsonObj);

jsonList.add(jsonObj2);

String str = jsonList.toString();

out.println(str);

}

}

public  class BaseAction extends ActionSupport implements ServletRequestAware,ServletResponseAware{

protected HttpServletRequest request = null;

protected HttpServletResponse response = null;  

//// 实现ServletResponseAware接口的setServletResponse方法，用于获得request对象

public void setServletRequest(HttpServletRequest request) {

this.request = request;

}

// 实现ServletResponseAware接口的setServletResponse方法，用于获得response对象

public void setServletResponse(HttpServletResponse response) {

this.response = response;

}

}