no message

code/springboot/newBank/src/main/java/demo/zhangjie/Qrydebit.java

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+package demo.zhangjie;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.List;
+import java.util.Map;
+
+@RestController
+public class Qrydebit {
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+
+    @RequestMapping("/qrydebit")
+    public List<Map<String, Object>> debit(HttpServletRequest request) {
+
+        //第一步，取下前端的字段
+        String debitNo=request.getParameter("debitNo");
+        String debitName =request.getParameter("debitName");
+
+        //第二步，写sql
+        String sql ="SELECT * FROM debit WHERE debitNo ='debitNo' AND CertificatesNo='debitName'";
+
+
+        //第三步，执行sql
+        List<Map<String, Object>> list=jdbcTemplate.queryForList(sql);
+
+
+        //第四步，返回
+        return list;
+
+    }
+}