11

src/main/java/com/example/demo/controller/StudentController.java

@@ -7,9 +7,11 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
+import java.time.LocalDate;
 import java.util.List;
 import java.util.Map;
 
@@ -107,7 +109,13 @@ public class StudentController {
     }
     @ApiOperation(value = "分页查询模糊查询名字 根据年份查询人数")
     @GetMapping("/findNameYear")
-    public  Page<Student> findNameYear(String name ,Integer page, Integer pageSize,Integer year){
-        return  studentService.findNameYear(name,page,pageSize,year);
+    public  Page<Student> findNameYear(@RequestParam int page, @RequestParam int size, @RequestParam String name,@RequestParam String year){
+        return studentService.findNameYear(page, size, year,name );
+    }
+
+    @ApiOperation(value = "分页查询 根据年龄查询 并将这个年龄上下10岁的人都查出来")
+    @GetMapping("/findObscureAge")
+    public  Page<Student> findObscureAge(@RequestParam Integer page, @RequestParam Integer size, @RequestParam Integer age){
+        return studentService.findAge(page,size,age);
     }
 }

src/main/java/com/example/demo/dao/StudentDao.java

@@ -2,6 +2,9 @@ package com.example.demo.dao;
 
 import com.example.demo.pojo.Student;
 import io.swagger.models.auth.In;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.domain.Specification;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.jpa.repository.support.JpaRepositoryImplementation;
@@ -15,5 +18,15 @@ public interface StudentDao extends JpaRepository<Student,Integer>, JpaRepositor
 
     List<Student> findByNameContaining(String name);
 
+    /**
+     *
+     * @param name
+     * @param year 2022-01-01 00：00：00
+     * @param year2 2022-12-31 23:59;59
+     * @param pageable
+     * @return
+     */
+    @Query(value = "select * from student  where name = ?1 and year between ?2 and ?3" ,nativeQuery = true)
+    Page<Student> findNameYear(String name,String year,String year2,Pageable pageable);
 
 }

src/main/java/com/example/demo/service/Impl/StudentImpl.java

@@ -6,13 +6,16 @@ import com.example.demo.service.StudentService;
 import com.github.wenhao.jpa.PredicateBuilder;
 import com.github.wenhao.jpa.Specifications;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.catalina.User;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Sort;
 import org.springframework.data.jpa.domain.Specification;
+import org.springframework.data.jpa.repository.query.Jpa21Utils;
 import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
 
 import javax.persistence.criteria.*;
 import java.time.LocalDate;
@@ -594,19 +597,31 @@ public class StudentImpl implements StudentService {
 
     @Override
     //分页查询 模糊查询名字 根据年份查询人数
-    public Page<Student> findNameYear(String name ,Integer page, Integer pageSize,Integer year) {
-        Specification<Student> studentSpecification=new Specification<Student>() {
-            @Override
-            public Predicate toPredicate(Root<Student> root, CriteriaQuery<?> query, CriteriaBuilder criteriaBuilder) {
-
-                Path adminName =root.get("name");
-                Predicate predicate =criteriaBuilder.like(adminName,"%"+query+"%");
-                return predicate;
-            }
-        };
-        PageRequest pageRequest=PageRequest.of(page -1,pageSize);
-        Page<Student> page1=studentDao.findAll(studentSpecification,pageRequest);
-        return page1;
+    public Page<Student> findNameYear(int page, int size, String year,String name) {
+//        Sort sort=Sort.by(Sort.Direction.DESC,year);
+        Pageable pageable=PageRequest.of(page,size);
+//        Page<Student> studentList=null;
+        PredicateBuilder<Student> and = Specifications.and();
+        and.like(name != null, "name", "%" + name + "%");
+        and.le(  year != null, "date", LocalDate.parse(year + "-12-31"));
+        and.ge(  year != null, "date", LocalDate.parse(year + "-01-01"));
+
+        Specification<Student> spec = and.build();
+        return studentDao.findAll(spec, pageable);
+    }
+
+    @Override
+    //分页查询 根据年龄查询 并将这个年龄上下10岁的人都查出来
+    public Page<Student> findAge(Integer page, Integer size, Integer age) {
+
+        Pageable pageable=PageRequest.of(page,size);
+
+        PredicateBuilder<Student> and=Specifications.and();
+        and.le(age !=null,"age",age+10);
+        and.ge(age !=null,"age",age-10);
+
+        Specification<Student> spec=and.build();
+        return studentDao.findAll(spec,pageable);
     }
 
 
@@ -619,6 +634,7 @@ public class StudentImpl implements StudentService {
         }
         return sb.toString();
     }
+
     public static Integer randomAge(){
         long round = Math.round(Math.random() * 50);
         return new Long(round).intValue();
@@ -629,6 +645,7 @@ public class StudentImpl implements StudentService {
         return new Long(round).intValue();
     }
 
+
     public static void main(String[] args) {
     }
 

src/main/java/com/example/demo/service/StudentService.java

@@ -2,6 +2,7 @@ package com.example.demo.service;
 
 import com.example.demo.pojo.Student;
 import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 
 import java.time.LocalDate;
 import java.util.List;
@@ -105,5 +106,14 @@ public interface StudentService {
      * @param
      * @return
      */
-    Page<Student> findNameYear(String name ,Integer page, Integer pageSize,Integer year);
+    Page<Student> findNameYear(int page, int size, String year,String name);
+
+    /**
+     *  分页查询 根据年龄查询 并将这个年龄上下10岁的人都查出来
+     * @param page
+     * @param size
+     * @param age
+     * @return
+     */
+    Page<Student> findAge(Integer page, Integer size,Integer age);
 }