转自：https://idig8.com/2018/09/01/xiaochengxujavashizhanxiaochengxudengluyuhouduanliandiao36/
重新温习下用户的注册的方式，开发一个用户登录的spring boot接口。源码：https://github.com/limingios/wxProgram.git 中的wx-springboot 和 No.15
service 类的开发
- UserService.java
package com.idig8.service;
import com.idig8.pojo.Users;
public interface UserService {
/**
* 判断用户名是否存在
* @param username
* @return
*/
public boolean queryUsernameIsExist(String username);
/**
* 保存用户
* @param user
* @return
*/
public void saveUser(Users user);
/**
* 查询用户对象
* @param username
* @return
*/
public Users queryUserIsExist(Users user);
}
···
* UserServiceImpl.java
> Sid 是注入的id的生成工具，Example queryExample = new Example(Users.class);
和 Criteria criteria = queryExample.createCriteria(); 都是一种套路，就是查询套路，大家可以看看
https://baike.baidu.com/item/criteria/5354117
··· java
package com.idig8.service;
import org.n3r.idworker.Sid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.security.SecurityProperties.User;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.idig8.mapper.UsersMapper;
import com.idig8.pojo.Users;
import com.idig8.utils.MD5Utils;
import tk.mybatis.mapper.entity.Example;
import tk.mybatis.mapper.entity.Example.Criteria;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UsersMapper usersMapper;
@Autowired
private Sid sid;
@Transactional(propagation =Propagation.SUPPORTS)
@Override
public boolean queryUsernameIsExist(String username) {
Users user = new Users();
user.setUsername(username);
Users result = usersMapper.selectOne(user);
return result==null? false:true;
}
@Transactional(propagation =Propagation.REQUIRED)
@Override
public void saveUser(Users user) {
String userId =sid.nextShort();
user.setId(userId);
usersMapper.insert(user);
}
@Transactional(propagation =Propagation.SUPPORTS)
@Override
public Users queryUserIsExist(Users user) {
Example queryExample = new Example(Users.class);
Criteria criteria = queryExample.createCriteria();
criteria.andEqualTo("username",user.getUsername());
try {
criteria.andEqualTo("password",MD5Utils.getMD5Str(user.getPassword()));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Users userOne = usersMapper.selectOneByExample(queryExample);
return userOne;
}
}
controller 类的开发
RegistLoginController.java
增加了登录方法。
package com.idig8.controller;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import com.idig8.pojo.Users;
import com.idig8.service.UserService;
import com.idig8.utils.JSONResult;
import com.idig8.utils.MD5Utils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
@RestController
@Api(value="用户注册登录的接口",tags={"注册和登录的controller"})
public class RegistLoginController {
@Autowired
private UserService userService;
@ApiOperation(value="用户注册",notes="用户注册的接口")
@PostMapping("/regist")
public JSONResult regist(@RequestBody Users user) {
//1.判断用户名和密码不能为空
if(StringUtils.isBlank(user.getUsername())||StringUtils.isBlank(user.getPassword())) {
return JSONResult.errorMsg("用户名或密码不能为空");
}
//2.判断用户名是否存在
boolean usernameIsExist = userService.queryUsernameIsExist(user.getUsername());
if(!usernameIsExist) {
user.setNickname(user.getUsername());
try {
user.setPassword(MD5Utils.getMD5Str(user.getPassword()));
} catch (Exception e) {
return JSONResult.errorMsg(e.getMessage());
}
user.setFollowCounts(0);
user.setReceiveLikeCounts(0);
user.setFansCounts(0);
userService.saveUser(user);
}else {
return JSONResult.errorMsg("用户名或已经存在，请更换在试试！");
}
//防止密码返回被获取到
user.setPassword("");
return JSONResult.ok(user);
}
@ApiOperation(value="用户登录",notes="用户登录的接口")
@PostMapping("/login")
public JSONResult login(@RequestBody Users user) {
//1.判断用户名和密码不能为空
if(StringUtils.isBlank(user.getUsername())||StringUtils.isBlank(user.getPassword())) {
return JSONResult.errorMsg("用户名或密码不能为空");
}
//2.判断用户名是否存在
Users userObject = userService.queryUserIsExist(user);
if(userObject==null){
return JSONResult.errorMsg("用户名或密码不存在！");
}
//防止密码返回被获取到
user.setPassword("");
return JSONResult.ok(userObject);
}
}
wx前端部分的开发
<view>
<view class="login-icon">
<image class="login-img" src="../../resource/images/dsp.jpg"></image>
</view>
<view class="login-from">
<form bindsubmit='doLogin'>
<!--账号-->
<view class="inputView">
<image class="nameImage" src="../../resource/images/username.png"></image>
<label class="loginLabel">账号</label>
<input name="username" type="text" maxlength="10" class="inputText" placeholder="请输入账号"/>
</view>
<view class="line"></view>
<!--密码-->
<view class="inputView">
<image class="keyImage" src="../../resource/images/password.png"></image>
<label class="loginLabel">密码</label>
<input name="password" maxlength="10" type="text" class="inputText" password="{{true}}" placeholder="请输入密码"/>
</view>
<!--按钮-->
<view>
<button class="loginBtn" type="primary" form-type='submit'>登陆</button>
</view>
<view>
<button class="goLoginBtn" type="warn" bindtap="goRegisterPage">返回注册</button>
</view>
</form>
</view>
</view>
const app = getApp()
Page({
data: {
},
doLogin: function (e) {
var formObject = e.detail.value;
var username = formObject.username;
var password = formObject.password;
// 简单验证
if (username.length == 0 || password.length == 0) {
wx.showToast({
title: '用户名或密码不能为空',
icon: 'none',
duration: 3000
})
} else {
wx.request({
url: app.serverUrl + "/login",
method: "POST",
data: {
username: username,
password: password
},
header: {
'content-type': 'application/json' // 默认值
},
success: function (res) {
console.log(res.data);
var status = res.data.status;
if (status == 200) {
wx.showToast({
title: "用户登陆成功~！",
icon: 'none',
duration: 3000
})
app.userinfo = res.data.data;
} else if (status == 500) {
wx.showToast({
title: res.data.msg,
icon: 'none',
duration: 3000
})
}
}
})
}
},
goLoginPage: function (e) {
console.log("跳转到注册");
}
})
PS：测试成功了，其实登录和注册页面基本一样的，就是改了个标题，请求的request地址发生了改变，唯一区别比较大的是，https://baike.baidu.com/item/criteria/5354117 这是spring boot常用的。
