Merge pull request #42 from chenyhtech/master

更新LibraryService 添加：查询可以借的书
shellqiqi · Sep 21, 2017 · da36cc6 · da36cc6
2 parents 95f5469 + cd7af05
commit da36cc6
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Showing 4 changed files with 42 additions and 1 deletion.
diff --git a/src/main/java/seu/dao/LibraryDao.java b/src/main/java/seu/dao/LibraryDao.java
@@ -68,6 +68,11 @@ public List<Library> queryBooksByBookName(final String bookName){
         Object[] params = new Object[]{bookName};
         return jdbcTemplate.query(sql, params, new LibraryMapper());
     }
+    public List<Library> queryAllBorrowedBook(){
+        final String sql = "SELECT * FROM Library WHERE not StudentID = ?";
+        Object[] params = new Object[]{ 0 };
+        return jdbcTemplate.query(sql, params, new LibraryMapper());
+    }
     public List<Library> queryAll() {
         final String sql = "SELECT * FROM Library";
         return jdbcTemplate.query(sql, new LibraryMapper());

diff --git a/src/main/java/seu/service/LibraryService.java b/src/main/java/seu/service/LibraryService.java
@@ -165,6 +165,33 @@ public int updateBook(Library book) {
         }
     }
 
+    /**
+     * 学生查询所有可以借的书籍
+     * @return 返回所有可以借的书籍
+     */
+    public List<Library> getAllAvailableBook(){
+        try{
+            List<Library> noAvaliableBook = libraryDao.queryAllBorrowedBook();
+            List<Library> result = libraryDao.queryAll();
+            int SIZE = noAvaliableBook.size();
+            for( int i = 0 ; i < SIZE ;i++){
+                Library borrowedBook = noAvaliableBook.get(i);
+                for(int j = 0 ; j < result.size(); j++){
+                    if( borrowedBook.getBookId() == result.get(j).getBookId() )
+                    {
+                        result.remove(j);
+                        break;
+                    }
+                }
+            }
+            //result.removeAll(noAvaliableBook);
+            return result;
+        }catch (Exception e){
+            e.printStackTrace();
+            return null;
+        }
+    }
+
     /**
      * 管理员获取所有学生所借图书全部信息
      * @return 返回所有学生所借图书全部信息

diff --git a/src/test/java/seu/dao/LibraryDaoTest.java b/src/test/java/seu/dao/LibraryDaoTest.java
@@ -67,6 +67,11 @@ public void queryBooksByStudentIdTest() throws Exception {
         System.out.println(libraryDaoItem.queryBooksByStudentId(2));
     }
 
+    @Test
+    public void queryAllBorrowedBookTest() throws Exception {
+        System.out.println(libraryDaoItem.queryAllBorrowedBook());
+    }
+
     @Test
     public void queryAllTest() throws Exception {
         System.out.println(libraryDaoItem.queryAll());

diff --git a/src/test/java/seu/service/LibraryServiceTest.java b/src/test/java/seu/service/LibraryServiceTest.java
@@ -16,7 +16,6 @@
 @SpringBootTest
 @Import(ApplicationContextConfig.class)
 public class LibraryServiceTest {
-
     @Autowired
     private LibraryService libraryService;
     @Test
@@ -66,6 +65,11 @@ public void updateBookByBookId() throws Exception {
         System.out.println(libraryService.updateBook(new Library(5,"book5",2,new Date())));
     }
 
+    @Test
+    public void getAllAvailableBook() throws Exception {
+        System.out.println(libraryService.getAllAvailableBook());
+    }
+
     @Test
     public void getLibraryAll() throws Exception {
         System.out.println(libraryService.getLibraryAll());