重新溫習下用戶的註冊的方式，開發一個用戶登錄的spring boot接口。源碼：https://github.com/limingios/wxProgram.git 中的wx-springboot 和 No.15
service 類的開發
UserService.java
package com.idig8.service;
import com.idig8.pojo.Users;
public interface UserService {
/**
* 判斷用戶名是否存在
* @param username
* @return
*/
public boolean queryUsernameIsExist(String username);
/**
* 保存用戶
* @param user
* @return
*/
public void saveUser(Users user);
/**
* 查詢用戶對象
* @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(); 都是一種套路，就是查詢套路，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 類的開發
RegistLoginController.java
增加了登錄方法。
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="用戶註冊登錄的接口",tags={"註冊和登錄的controller"})
public class RegistLoginController {
@Autowired
private UserService userService;
@ApiOperation(value="用戶註冊",notes="用戶註冊的接口")
@PostMapping("/regist")
public JSONResult regist(@RequestBody Users user) {
//1.判斷用戶名和密碼不能爲空
if(StringUtils.isBlank(user.getUsername())||StringUtils.isBlank(user.getPassword())) {
return JSONResult.errorMsg("用戶名或密碼不能爲空");
}
//2.判斷用戶名是否存在
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("用戶名或已經存在，請更換在試試！");
}
//防止密碼返回被獲取到
user.setPassword("");
return JSONResult.ok(user);
}
@ApiOperation(value="用戶登錄",notes="用戶登錄的接口")
@PostMapping("/login")
public JSONResult login(@RequestBody Users user) {
//1.判斷用戶名和密碼不能爲空
if(StringUtils.isBlank(user.getUsername())||StringUtils.isBlank(user.getPassword())) {
return JSONResult.errorMsg("用戶名或密碼不能爲空");
}
//2.判斷用戶名是否存在
Users userObject = userService.queryUserIsExist(user);
if(userObject==null){
return JSONResult.errorMsg("用戶名或密碼不存在！");
}
//防止密碼返回被獲取到
user.setPassword("");
return JSONResult.ok(userObject);
}
}wx前端部分的開發
<view>
<view class="login-icon">
<image class="login-img" src="../../resource/images/dsp.jpg"></image>
</view>
<view class="login-from">
<form bindsubmit='doLogin'>
<!--賬號-->
<view class="inputView">
<image class="nameImage" src="../../resource/images/username.png"></image>
<label class="loginLabel">賬號</label>
<input name="username" type="text" maxlength="10" class="inputText" placeholder="請輸入賬號"/>
</view>
<view class="line"></view>
<!--密碼-->
<view class="inputView">
<image class="keyImage" src="../../resource/images/password.png"></image>
<label class="loginLabel">密碼</label>
<input name="password" maxlength="10" type="text" class="inputText" password="{{true}}" placeholder="請輸入密碼"/>
</view>
<!--按鈕-->
<view>
<button class="loginBtn" type="primary" form-type='submit'>登陸</button>
</view>
<view>
<button class="goLoginBtn" type="warn" bindtap="goRegisterPage">返回註冊</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;
// 簡單驗證
if (username.length == 0 || password.length == 0) {
wx.showToast({
title: '用戶名或密碼不能爲空',
icon: 'none',
duration: 3000
})
} else {
wx.request({
url: app.serverUrl + "/login",
method: "POST",
data: {
username: username,
password: password
},
header: {
'content-type': 'application/json' // 默認值
},
success: function (res) {
console.log(res.data);
var status = res.data.status;
if (status == 200) {
wx.showToast({
title: "用戶登陸成功~！",
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("跳轉到註冊");
}
})
PS：測試成功了，其實登錄和註冊頁面基本一樣的，就是改了個標題，請求的request地址發生了改變，唯一區別比較大的是，https://baike.baidu.com/item/criteria/5354117 這是spring boot常用的。