public class User {Integer id;String name;String sex;public User() {super();// TODO Auto-generated constructor stub}public User(Integer id, String name, String sex) {super();this.id = id;this.name = name;this.sex = sex;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getSex() {return sex;}public void setSex(String sex) {this.sex = sex;}}
JSON. jsp
<Body> <Table border = "1px" align = "center"> <thead> <tr> <TH> id </Th> <TH> name </Th> <TH>> gender </Th> </tr> </thead> <tbody id = "users"> </tbody> </table> </body>
<SCRIPT type = "text/JavaScript"> <! -- Window. onload = function () {// obtain the xhr object var XMLHTTP = createxmlhttprequest (); XMLHTTP. onreadystatechange = function () {// determine whether the server returns the correct information if (XMLHTTP. readystate = 4) {// accept data var jsonstr = XMLHTTP. responsetext; var jsonemps = eval ("(" + jsonstr + ")"); display (jsonemps) ;}/// specify the request type XMLHTTP. open ("get ",". /listservlet? Timestamp = "+ new date (). gettime (), true); // sends the request XMLHTTP. send (null);} function display (OBJ) {var users = document. getelementbyid ("users"); For (VAR I = 0; I <obj. length; I ++) {// create tr var TR = document. createelement ("TR"); // create TD var TD1 = document. createelement ("TD"); var td2 = document. createelement ("TD"); var td3 = document. createelement ("TD"); // Add text td1.appendchild (document. createtextnode (OBJ [I]. ID); td2.appendchild (document. createtextnode (OBJ [I]. name); td3.appendchild (document. createtextnode (OBJ [I]. sex); // Add to tr. appendchild (TD1); tr. appendchild (td2); tr. appendchild (td3); // Add users to users. appendchild (TR) ;}} function createxmlhttprequest () {var XMLHTTP; try {// Firefox, opera 8.0 +, safarixmlhttp = new XMLHttpRequest ();} catch (E) {try {// Internet assumerxmlhttp = new activexobject ("msxml2.xmlhttp");} catch (e) {try {XMLHTTP = new activexobject ("Microsoft. XMLHTTP ");} catch (e) {}} return XMLHTTP;} // --> </SCRIPT>
Servlet
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");List<User> list=new ArrayList<User>();for(int i=0;i<5;i++){User user=new User(i,"ren"+i,"nv");list.add(user);}String json=JSONArray.fromObject(list).toString();response.setContentType("text/html;charset=UTF-8");PrintWriter out=response.getWriter();out.print(json);System.out.println("as");}
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