ssm-百度第三方登录

来源：互联网发布：java打印n*n乘法表编辑：程序博客网时间：2024/05/22 00:09
1.首先我们进入controller层login方法跳转login页面
      @RequestMapping("login")      public ModelAndView login(){        ModelAndView mv = new ModelAndView();        mv.setViewName("../login");        return mv;      }    2.然后进入login页面  <%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><script type="text/javascript">   function tolog(){      location='http://openapi.baidu.com/oauth/2.0/authorize?response_type=code&client_id=IDIhE9Fxo2AGexqEmIl3dBO7&redirect_uri=http://localhost:8080/baidu';   }</script><body>   <center>      <button onclick="tolog()">登录</button>   </center></body></html>
  3.通过链接去访问baidu,并带参数，通过client_id和redirect_url获取code，并通过回调url进入controller中的baidu方法
@RequestMapping("baidu")public ModelAndView baidu(Code c) throws IOException {    String code = c.getCode();    System.out.println(code);    HashMap<String, String> map = new HashMap<String,String>();    map.put("grant_type", "authorization_code");    map.put("code", code);    map.put("client_id", "IDIhE9Fxo2AGexqEmIl3dBO7");    map.put("client_secret", "O2Q6zS6sWYks1tTHKd65TslbsyVXDSgx");    map.put("redirect_uri", "http://localhost:8080/baidu");    String json = HttpUtils.postForm("https://openapi.baidu.com/oauth/2.0/token", map);    System.out.println(json);    ObjectMapper mapper = new ObjectMapper();    BToken token = mapper.readValue(json, BToken.class);    String access_token = token.getAccess_token();    String json2 = HttpUtils.get("https://openapi.baidu.com/rest/2.0/passport/users/getLoggedInUser?access_token=" + access_token);    System.out.println(json2);    ObjectMapper mapper2 = new ObjectMapper();    User user = mapper2.readValue(json2, User.class);    user.setUname(new String(user.getUname().getBytes(),"utf-8"));    ModelAndView mv = new ModelAndView();    mv.addObject("user",user);    mv.setViewName("success");    return mv;}
  4.通过code及其他参数可以获取Access_Token，通过Access_Token可以获取用户信息
  然后跳转到成功页面
<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body>   <center>      <img src="http://tb.himg.baidu.com/sys/portrait/item/${user.portrait }"><br>      <h3>${user.uid }</h3>      <h3>${user.uname }</h3>   </center></body></html>

   5.pojo（附代码）
      
     5.1  User类
package com.jk.pojo;import java.io.Serializable;public class User implements Serializable{   private String uid;   private String uname;   private String portrait;   public String getUid() {      return uid;   }   public void setUid(String uid) {      this.uid = uid;   }   public String getUname() {      return uname;   }   public void setUname(String uname) {      this.uname = uname;   }   public String getPortrait() {      return portrait;   }   public void setPortrait(String portrait) {      this.portrait = portrait;   }}
      5.2 Code类 
package com.jk.pojo;import java.io.Serializable;public class Code implements Serializable{   private String code;   public String getCode() {      return code;   }   public void setCode(String code) {      this.code = code;   }}
     5.3 BToken类
package com.jk.pojo;import java.io.Serializable;public class BToken implements Serializable{   private Integer expires_in;   private String refresh_token;   private String access_token;   private String session_secret;   private String session_key;   private String scope;   private String error_code;   private String error_msg;   public String getError_msg() {      return error_msg;   }   public void setError_msg(String error_msg) {      this.error_msg = error_msg;   }   public String getError_code() {      return error_code;   }   public void setError_code(String error_code) {      this.error_code = error_code;   }   public Integer getExpires_in() {      return expires_in;   }   public void setExpires_in(Integer expires_in) {      this.expires_in = expires_in;   }   public String getRefresh_token() {      return refresh_token;   }   public void setRefresh_token(String refresh_token) {      this.refresh_token = refresh_token;   }   public String getSession_secret() {      return session_secret;   }   public void setSession_secret(String session_secret) {      this.session_secret = session_secret;   }   public String getSession_key() {      return session_key;   }   public void setSession_key(String session_key) {      this.session_key = session_key;   }   public String getScope() {      return scope;   }   public void setScope(String scope) {      this.scope = scope;   }   public String getAccess_token() {      return access_token;   }   public void setAccess_token(String access_token) {      this.access_token = access_token;   }}
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