对象转换为JSON数据格式&使用JQuery获取数据

package servlet; import entity.Users; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import org.apache.commons.collections.map.HashedMap; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class JsonServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setCharacterEncoding("utf-8"); Users users = new Users("张三", "q123"); //将Users对象转换为JSONObject JSONObject jsonObject = JSONObject.fromObject(users); //使用JSONObject的toString()方法将JSONObject转换成字符串 System.out.println( "users:" + jsonObject.toString() ); List<String> listStr = new ArrayList<String>(0); listStr.add("小明"); listStr.add("小红"); JSONArray jsonListStr = JSONArray.fromObject(listStr); System.out.println( "jsonListStr:" + jsonListStr.toString() ); List<Users> listUsers = new ArrayList<Users>(0); listUsers.add(new Users("大名", "123")); listUsers.add(new Users("大红", "456")); JSONArray jsonListUsers = JSONArray.fromObject(listUsers); System.out.println( "jsonListUsers:" + jsonListUsers.toString() ); Map<String, String> mapStr = new HashMap<String, String>(0); mapStr.put("彩虹", "彩彩"); mapStr.put("豆豆", "小豆"); JSONObject jsonMapStr = JSONObject.fromObject(mapStr); System.out.println( "jsonMapStr:" + jsonMapStr.toString() ); Map<String, Users> mapUser = new HashMap<String, Users>(0); mapUser.put("1", new Users("小彩虹", "123")); mapUser.put("2", new Users("小豆豆", "123")); JSONObject jsonMapUser = JSONObject.fromObject(mapUser); System.out.println( "jsonMapUser:" + jsonMapUser.toString() ); Map<String, Object> result = new HashMap<String, Object>(0); result.put("jsonListStr", jsonListStr); result.put("jsonListUsers", jsonListUsers); result.put("jsonMapStr", jsonMapStr); result.put("jsonMapUser", jsonMapUser); result.put("users", jsonObject); JSONObject jsonResult = JSONObject.fromObject(result); System.out.print(jsonResult.toString()); response.getWriter().print(jsonResult.toString()); } }