• 微信支付业务

    目录

    1.微信支付流程图

    2.微信接口查询官网

    3.根据订单生成微信二维码

    4.前端二维码及查询订单的展示

    5.后台查询订单状态

    6.展示实体类及依赖

    1.微信支付流程图

     2.微信接口查询官网

    https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=9_1

     3.根据订单生成微信二维码

    controller层

    1. @CrossOrigin//解决跨域问题
    2. @RestController
    3. @RequestMapping("/order")
    4. public class OrderController {
    5.     @Resource
    6.     private OrderService orderService;
    7.  
    8.     @RequestMapping("/createNavite/{orderNo}")
    9.     public CommonResult createNavite(@PathVariable String orderNo){
    10.         return orderService.createNative(orderNo);
    11.     }
    12. }

    配置文件

    1. server.port=8807
    2. spring.datasource.druid.url=jdbc:mysql://localhost:3306/project?serverTimezone=Asia/Shanghai
    3. spring.datasource.druid.driver-class-name=com.mysql.cj.jdbc.Driver
    4. spring.datasource.druid.username=root
    5. spring.datasource.druid.password=123456
    6.  
    7. # 微信的appid 商家id 密钥---申请你无法申请因为需要营业执照--这里一个老师的
    8. weixin.appid=wx8087d8149331d27c
    9. weixin.mch_id=1532192611
    10. weixin.api_key=Cc158380629071583806290715838062

    service层

    1. @Service
    2. public class OrderService {
    3.  
    4.     @Resource
    5.     private OrderMapper orderMapper;
    6.     //配置文件中有
    7.     @Value("${weixin.appid}")
    8.     private String appId;
    9.     @Value("${weixin.mch_id}")
    10.     private String mchId;
    11.     @Value("${weixin.api_key}")
    12.     private String apiKey;
    13.     public CommonResult createNative(String orderNo) {
    14.         //1.根据订单号查询订单信息
    15.         QueryWrapper queryWrapper=new QueryWrapper<>();
    16.         queryWrapper.eq("order_no",orderNo);
    17.         //0代表未支付
    18.         queryWrapper.eq("status",0);
    19.         Order order = orderMapper.selectOne(queryWrapper);
    20.         if(order!=null){
    21.             try{
    22.                 Map params=new HashMap<>();//请求参数
    23.                 params.put("appid",appId);
    24.                 params.put("mch_id",mchId);
    25.                 params.put("nonce_str", WXPayUtil.generateNonceStr());
    26.                 params.put("body",order.getCourseTitle());
    27.                 params.put("out_trade_no",orderNo);
    28.                 //这是真实数据
    29.                 //params.put("total_fee",new BigDecimal(order.getTotalFee()).multiply(new BigDecimal(100)).longValue()+"");
    30.                 //测试金额数据，现在是1分
    31.                 params.put("total_fee",new BigDecimal(0.01).multiply(new BigDecimal(100)).longValue()+"");
    32.                 params.put("spbill_create_ip","127.0.0.1");//未来写成项目部署的ID
    33.                 params.put("notify_url","http://localhost:8080/pay/back");
    34.                 params.put("trade_type","NATIVE");
    35.                 //创建httpClient对象 作为远程调用
    36.                 HttpClient client=new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");
    37.                 //支持https协议
    38.                 client.setHttps(true);
    39.                 //设置请求的参数---格式为xml
    40.                 client.setXmlParam(WXPayUtil.generateSignedXml(params,apiKey));
    41.                 //发送请求
    42.                 client.post();
    43.                 //获取请求响应结果
    44.                 String content = client.getContent();
    45.                 System.out.println(content);
    46.                 Map map=WXPayUtil.xmlToMap(content);
    47.                 if(map.get("result_code").equals("SUCCESS")){
    48.                     Map result=new HashMap<>();
    49.                     result.put("codeUrl",map.get("code_url"));
    50.                     result.put("price",order.getTotalFee());
    51.                     result.put("orderNo",orderNo);
    52.                     return new CommonResult(2000,"生成二维码成功",result);
    53.                 }
    54.             }catch (Exception e){
    55.                 e.printStackTrace();
    56.             }
    57.         }
    58.  
    59.         return new CommonResult(5000,"订单失效",null);
    60.     }
    61. }

    4.前端二维码及查询订单的展示

     注意下载vue-qr

    npm install vue-qr

    1. <template>
    2.   <div id="app">
    3.     <el-button type="primary" @click="pay">支付el-button>
    4.     
    5.     <el-dialog
    6.             title="收银台"
    7.             :visible.sync="dislogVisible"
    8.             width="30%">
    9.       <div style="text-align: center">
    10.         <p>微信支付{{payResult.price}}元
    11.         <div style="border: 1px solid #f3f3f3; width: 220px;padding: 0px;margin: 0px auto">
    12.           
    13.           <vue-qr
    14.                   :text="payResult.codeUrl"
    15.                   :margin="0"
    16.                   colorDark="green"
    17.                   :logo="require('@/assets/logo.png')"
    18.                   colorLight="#fff"
    19.                   :size="200">
    20.  
    21.           vue-qr>
    22.         div>
    23.  
    24.       div>
    25.       <el-divider>el-divider>
    26.       <div style="font-size: 13px;">
    27.         提示:<br>
    28.         二维码两小时内有效，请及时扫码支付<br>
    29.       div>
    30.  
    31.     el-dialog>
    32.   div>
    33. template>
    34.  
    35. <script>
    36.  
    37. import vueQr from 'vue-qr'
    38. export default {
    39.   name: 'app',
    40.   components:{
    41.     vueQr
    42.   },
    43.   data(){
    44.     return{
    45.       orderNo:"222111111",
    46.       payResult:{
    47.         price:0,
    48.         //借助vue-qr 可以把二维码地址转换为二维码图片
    49.         codeUrl:'',
    50.       },
    51.       dislogVisible:false,
    52.       timer1:""
    53.     }
    54.   },
    55.   methods:{
    56.     //根据订单号查询支付状态
    57.     queryPayStatus(orderNo){
    58.       this.$http.post("/order/queryPayStatus/"+orderNo).then(result=>{
    59.         if(result.data.code===2000){
    60.           //消除定时器
    61.           clearInterval(this.timer1)
    62.           this.timer1=null;
    63.           this.$message.success("支付成功");
    64.           this.dislogVisible=false;
    65.         }
    66.       })
    67.     },
    68.     pay(){
    69.       this.dislogVisible=true;
    70.       this.$http.post("/order/createNavite/"+this.orderNo).then(result=>{
    71.         if(result.data.code===2000){
    72.           this.payResult=result.data.data;
    73.           // //设置一个定时任务，每隔3秒调用一次
    74.           this.timer1=setInterval(()=>{
    75.             this.queryPayStatus(this.payResult.out_trade_no)
    76.           },3000);
    77.         }
    78.       })
    79.     }
    80.   }
    81. }
    82. script>
    83.  
    84. <style>
    85.  
    86. style>

     5.后台查询订单状态

    controller层

    1.  @RequestMapping("/queryPayStatus/{orderNo}")
    2.     public CommonResult queryPayStatus(@PathVariable String orderNo){
    3.         return orderService.queryPayStatus(orderNo);
    4.     }

    service层

    1. public CommonResult queryPayStatus(String orderNo) {
    2.         try{
    3.             //1.根据订单状态查询微信的支付情况
    4.             HttpClient client=new HttpClient("https://api.mch.weixin.qq.com/pay/orderquery");
    5.             Map params=new HashMap<>();
    6.             params.put("appid",appId);
    7.             params.put("mch_id",mchId);
    8.             params.put("out_trade_no",orderNo);
    9.             params.put("nonce_str",WXPayUtil.generateNonceStr());
    10.  
    11.             client.setHttps(true);
    12.             client.setXmlParam(WXPayUtil.generateSignedXml(params,apiKey));
    13.             client.post();
    14.  
    15.             String content = client.getContent();
    16.             System.out.println(content);
    17.  
    18.             Map map=new HashMap<>();
    19.  
    20.             map = WXPayUtil.xmlToMap(content);
    21.             
    22.             if(map.get("trade_state").equals("SUCCESS")){
    23.                 //1.修改订单状态
    24.                 Order order=new Order();
    25.                 order.setStatus(1);
    26.                 order.setGmtModified(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    27.                 QueryWrapper queryWrapper=new QueryWrapper<>();
    28.                 queryWrapper.eq("order_no",orderNo);
    29.                 queryWrapper.eq("status",0);
    30.                 orderMapper.update(order,queryWrapper);
    31.  
    32.                 return new CommonResult(2000,"支付成功",null);
    33.             }
    34.  
    35.  
    36.         }catch (Exception e){
    37.  
    38.         }
    39.         return new CommonResult(5000,"支付失败",null);
    40.     }

    6.展示实体类及依赖

    order类

    1. @Data
    2. @TableName(value = "t_order")
    3. public class Order {
    4.     @TableId(type = IdType.ASSIGN_ID)
    5.     private String id;
    6.     private String orderNo;
    7.     private String courseId;
    8.     private String courseTitle;
    9.     private String teacherName;
    10.     private String memberId;
    11.     private String nickname;
    12.     private String mobile;
    13.     private Double totalFee;
    14.     private Integer payType;
    15.     private Integer status;
    16.     private Integer isDeleted;
    17.     private String gmtCreate;
    18.     private String gmtModified;
    19.  
    20. }

    依赖

    1. dependencies>
    2.         <dependency>
    3.             <groupId>org.springframework.bootgroupId>
    4.             <artifactId>spring-boot-starter-webartifactId>
    5.         dependency>
    6.  
    7.         <dependency>
    8.             <groupId>mysqlgroupId>
    9.             <artifactId>mysql-connector-javaartifactId>
    10.             <scope>runtimescope>
    11.         dependency>
    12.         <dependency>
    13.             <groupId>org.projectlombokgroupId>
    14.             <artifactId>lombokartifactId>
    15.             <optional>trueoptional>
    16.         dependency>
    17.         <dependency>
    18.             <groupId>org.springframework.bootgroupId>
    19.             <artifactId>spring-boot-starter-testartifactId>
    20.             <scope>testscope>
    21.         dependency>
    22.         <dependency>
    23.             <groupId>com.alibabagroupId>
    24.             <artifactId>druid-spring-boot-starterartifactId>
    25.             <version>1.1.9version>
    26.         dependency>
    27.         
    28.         <dependency>
    29.             <groupId>com.baomidougroupId>
    30.             <artifactId>mybatis-plus-boot-starterartifactId>
    31.             <version>3.5.2version>
    32.         dependency>
    33.         
    34.         <dependency>
    35.             <groupId>com.github.wxpaygroupId>
    36.             <artifactId>wxpay-sdkartifactId>
    37.             <version>0.0.3version>
    38.         dependency>
    39.         
    40.         <dependency>
    41.             <groupId>org.apache.httpcomponentsgroupId>
    42.             <artifactId>httpclientartifactId>
    43.             <version>4.5.3version>
    44.         dependency>
    45.     dependencies>

     

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  • 原文地址：https://blog.csdn.net/qq_50896786/article/details/126322033