Vue插件之vue-resource

• get方式

this.$http.get(‘url’,{

param1:value1,

param2:value2

}).then(function(response){

// response.data中获取ResponseData实体

},function(error){

// 发生错误

});

• post方式

this.$http.post(‘url’,{

param1:value1,

param2:value2

},{

emulateJSON:true

}).then(function(response){

// response.data中获取ResponseData实体

},function(response){

// 发生错误

});

步骤：

1. 安装vue-resource模块：cnpm install vue-resource --save

2. 在main.js中引入vue-resource并通过命令Vue.user()使用该插件

3. 在组件里面通过get()方法使用

示例：普通请求

• 服务器端代码：

@WebServlet(urlPatterns = “/servlet/vue”)

public class VueServlet extends javax.servlet.http.HttpServlet {

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

doGet(request,response);

}

protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {

response.setCharacterEncoding(“UTF-8”);

response.setContentType(“application/json; charset=utf-8”);

response.setHeader(“Access-Control-Allow-Origin”, “*”); //跨域请求

PrintWriter out = response.getWriter();

List userList = new ArrayList<>();

userList.add(new User(11,“zhangsan”,‘女’));

userList.add(new User(22,“lisi”,‘女’));

userList.add(new User(33,“wanger”,‘女’));

userList.add(new User(44,“mazi”,‘男’));

String json = new Gson().toJson(userList);

System.out.println("json "+json);

out.write(json);

}

}

• 前端代码

第一步：安装vue-resource模块，代码如下：

第二步：在main.js中引入vue-resource并通过命令Vue.user()使用该插件

第三步：页面

<button @click=“getData()”>请求数据

• {{item}}

• 示例：

  ---

  • 服务器端代码：

  @WebServlet(urlPatterns = “/servlet/vue”)

  public class VueServlet extends HttpServlet {

  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

  doGet(request, response);

  }

  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

  response.setCharacterEncoding(“UTF-8”);

  response.setContentType(“application/json; charset=utf-8”);

  String callback = request.getParameter(“callback”);

  PrintWriter out = response.getWriter();

  List userList = new ArrayList<>();

  userList.add(new User(11, “zhangsan”, ‘女’));

  userList.add(new User(22, “lisi”, ‘女’));

  userList.add(new User(33, “wanger”, ‘女’));

  userList.add(new User(44, “mazi”, ‘男’));

  String json = new Gson().toJson(userList);

  System.out.println("json " + json);

  out.write(callback + “(” + json + “)”);

  }

  }