查询单条记录

mis-service/main/java/bc/mm/mis/core/dao/CollectDao.java

@@ -6,13 +6,22 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.Optional;
+
 
 @Repository
 public interface CollectDao extends JpaRepository<Collect,Integer> {
     /**
-     *
+     * pagination
      * @param pageable
      * @return
      */
     Page<Collect> findAll(Pageable pageable);
+
+    /**
+     * find by id
+     * @param id
+     * @return
+     */
+    Optional<Collect> findAllById(Integer id);
 }

mis-service/main/java/bc/mm/mis/core/service/CollectService.java

@@ -1,8 +1,8 @@
 package bc.mm.mis.core.service;
 
 import bc.mm.mis.core.bean.Collect;
-
 import java.util.List;
+import java.util.Optional;
 
 public interface CollectService {
     /**
@@ -12,4 +12,6 @@ public interface CollectService {
      * @return
      */
     List<Collect> aclist(int page, int size);
+
+    Optional<Collect> findById(Integer id);
 }

mis-service/main/java/bc/mm/mis/core/service/impl/CollectServiceImpl.java

@@ -9,6 +9,7 @@ import org.springframework.data.domain.PageRequest;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
+import java.util.Optional;
 
 @Service
 public class CollectServiceImpl implements CollectService {
@@ -21,4 +22,9 @@ public class CollectServiceImpl implements CollectService {
         Page<Collect> collectPage = collectDao.findAll(pageRequest);
         return collectPage.getContent();
     }
+
+    @Override
+    public Optional<Collect> findById(Integer id) {
+        return collectDao.findById(id);
+    }
 }

mis-web/src/main/java/bc/mm/mis/v1/CollectController.java

@@ -9,7 +9,9 @@ import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.util.HashMap;
 import java.util.List;
+import java.util.Optional;
 
 @RestController
 @RequestMapping("/v1/pair")
@@ -23,4 +25,12 @@ public class CollectController {
 
         return AjaxResult.success("success",collectList);
     }
+
+    @RequestMapping("/one/{id}")
+    public JSONObject gone(@PathVariable("id") int id){
+        Optional<Collect> collect = collectService.findById(id);
+        HashMap map = new HashMap();
+        map.put("at",collect.get());
+        return AjaxResult.success("success",map);
+    }
 }