{"id":348,"date":"2020-10-31T18:18:58","date_gmt":"2020-10-31T10:18:58","guid":{"rendered":"http:\/\/moyisuiying.com\/?p=348"},"modified":"2020-12-10T14:23:59","modified_gmt":"2020-12-10T06:23:59","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%85%a5%e9%97%a8%e5%ad%a6%e4%b9%a0%ef%bc%88%e5%9b%9b%ef%bc%89-%e4%bd%bf%e7%94%a8%e5%b7%a5%e5%85%b7%e7%b1%bb%e5%b0%81%e8%a3%85jdbc%e5%ae%9e%e7%8e%b0my","status":"publish","type":"post","link":"http:\/\/moyisuiying.com\/index.php\/javastudy\/mysql\/348.html","title":{"rendered":"MySQL\u6570\u636e\u5e93\u5165\u95e8\u5b66\u4e60\uff08\u56db\uff09\u2014\u2014\u4f7f\u7528\u5de5\u5177\u7c7b\u5c01\u88c5JDBC\u5b9e\u73b0MySQL\u7684\u66f4\u65b0\u64cd\u4f5c"},"content":{"rendered":"\n

MySQL\u6570\u636e\u5e93\u5165\u95e8\u5b66\u4e60\uff08\u56db\uff09\u2014\u2014\u4f7f\u7528\u5de5\u5177\u7c7b\u5c01\u88c5JDBC\u5b9e\u73b0MySQL\u7684\u66f4\u65b0\u64cd\u4f5c<\/h2>\n\n\n\n

1.\u524d\u8a00<\/h3>\n\n\n\n

\u6211\u4eec\u77e5\u9053\uff0c\u4e8b\u5b9e\u4e0a\uff0cMySQL\u7684 \u201c\u589e\u5220\u67e5\u6539\u201d\u5176\u5b9e\u5c31\u662f\u5206\u4e3a\u4e24\u7c7b\uff0c\u4e00\u7c7b\u662f\u66f4\u65b0\u64cd\u4f5c\uff1aint executeUpdate(String sql)\u5305\u62ec\u4e86\u63d2\u5165\uff08insert\uff09\uff0c\u66f4\u65b0\uff08update\uff09\uff0c\u5220\u9664\uff08delete\uff09\uff1b\u53e6\u5916\u4e00\u7c7b\u662f\u67e5\u8be2\u64cd\u4f5c\uff08select\uff09\uff0c\u7531ResultSet executeQuery(String sql) \u5b9e\u73b0\u3002
\u89c2\u5bdf\u6570\u636e\u5e93\u66f4\u65b0\u64cd\u4f5c\u65f6\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n

\/**\n     * @param book \u9700\u8981\u4fdd\u5b58\u7684\u5bf9\u8c61\n     * @return \u4fdd\u5b58\u6210\u529f\u8fd4\u56de1\u5426\u5219\u8fd4\u56de 0\n     *\/\n    public int saveByPrepareStatement(Book book) {\n        \/\/\u62fc\u63a5\u9700\u8981\u6267\u884c\u7684sql\u8bed\u53e5\n        String sql = \"insert into book(name,price,status,discount,isBorrowed,createTime) values(?,?,?,?,?,?)\";\n        int result = 0;\n        try {\n            \/\/\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = JDBCUtil.getConnection();\n            \/\/\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            \/\/\u8bbe\u7f6ename\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setString(1, book.getName());\n            \/\/\u8bbe\u7f6eprice\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setDouble(2, book.getPrice());\n            \/\/\u8bbe\u7f6estatus\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setByte(3, book.getStatus());\n            \/\/\u8bbe\u7f6ediscount\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setFloat(4, book.getDiscount());\n            \/\/\u8bbe\u7f6eisBorrowed\u5bf9\u5e94\u5360\u4f4d\u7b26\u7684\u503c\n            preparedStatement.setBoolean(5, book.isBorrowed());\n            \/\/\u8bbe\u7f6ecreateTime\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c,\u9700\u8981\u5c06 java.Util.Date \u8f6c\u5316\u4e3a java.sql.Date\u624d\u53ef\u4ee5\n            preparedStatement.setDate(6,new Date(book.getCreateTime().getTime()));\n            \/\/\u5f00\u59cb\u6267\u884c,\u5e76\u8fd4\u56de\u5f71\u54cd\u7684\u884c\u6570\n            result = preparedStatement.executeUpdate();\n            \/\/\u91ca\u653e\u8d44\u6e90,\u5148\u5f00\u542f\u7684\u540e\u91ca\u653e\n            JDBCUtil.close(connection, preparedStatement, null);\n\n        } catch (SQLException e) {\n            \/\/ TODO Auto-generated catch block\n            e.printStackTrace();\n        }\n\n       return result;\n    }\n\n\n    \/**\n     * \u66f4\u65b0book\n     * @param newBook\n     * @return \u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\n     *\/\n    public int updateBookByPreparedStatement(Book newBook) {\n\n        \/\/\u62fc\u63a5\u9700\u8981\u6267\u884c\u7684\u66f4\u65b0sql\u8bed\u53e5\n        String sql = \"update  book  set name=?,price = ?,status = ?,discount = ?,isBorrowed = ?,createTime = ? where id = ?\";\n        int result = 0;\n        try {\n            \/\/\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = JDBCUtil.getConnection();\n            \/\/\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            \/\/\u8bbe\u7f6ename\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setString(1, newBook.getName());\n            \/\/\u8bbe\u7f6eprice\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setDouble(2, newBook.getPrice());\n            \/\/\u8bbe\u7f6estatus\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setByte(3, newBook.getStatus());\n            \/\/\u8bbe\u7f6ediscount\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setFloat(4, newBook.getDiscount());\n            \/\/\u8bbe\u7f6eisBorrowed\u5bf9\u5e94\u5360\u4f4d\u7b26\u7684\u503c\n            preparedStatement.setBoolean(5, newBook.isBorrowed());\n            \/\/\u8bbe\u7f6ecreateTime\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c,\u9700\u8981\u5c06 java.Util.Date \u8f6c\u5316\u4e3a java.sql.Date\u624d\u53ef\u4ee5\n            preparedStatement.setDate(6,new Date(newBook.getCreateTime().getTime()));\n            \/\/\u8bbe\u7f6eid\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setInt(7, newBook.getId());\n            \/\/\u5f00\u59cb\u6267\u884c\u66f4\u65b0,\u5e76\u8fd4\u56de\u5f71\u54cd\u7684\u884c\u6570\n            result = preparedStatement.executeUpdate();\n            \/\/\u91ca\u653e\u8d44\u6e90,\u5148\u5f00\u542f\u7684\u540e\u91ca\u653e\n            JDBCUtil.close(connection, preparedStatement, null);\n        } catch (SQLException e) {\n            \/\/ TODO Auto-generated catch block\n            e.printStackTrace();\n        }\n\n\n        return result;\n\n    }\n    \/**\n     * \u5220\u9664book\n     * @param id \u9700\u8981\u5220\u9664\u4e66\u7c4d\u7684ID\n     * @return \u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\n     *\/\n    public int deleteBookById(int id) {\n\n        \/\/\u62fc\u63a5\u9700\u8981\u6267\u884c\u7684\u5220\u9664\u7684sql\u8bed\u53e5\n        String sql = \"delete from book  where id = ?\";\n        int result = 0;\n\n        try {\n            \/\/\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = JDBCUtil.getConnection();\n            \/\/\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            \/\/\u8bbe\u7f6eid\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setInt(1, id);\n            \/\/\u5f00\u59cb\u6267\u884c\u66f4\u65b0,\u5e76\u8fd4\u56de\u5f71\u54cd\u7684\u884c\u6570\n            result = preparedStatement.executeUpdate();\n            \/\/\u91ca\u653e\u8d44\u6e90,\u5148\u5f00\u542f\u7684\u540e\u91ca\u653e\n            JDBCUtil.close(connection, preparedStatement, null);\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n        return result;\n\n    }<\/code><\/pre>\n\n\n\n
\u6211\u4eec\u53d1\u73b0\uff0c\u66f4\u65b0\uff08insert\uff0cupdate,delete\uff09\u8fd9\u4e09\u4e2a\u64cd\u4f5c\u6709\u8fd9\u51e0\u4e2a\u6b65\u9aa4\uff1a
\u2460\u83b7\u53d6\u8fde\u63a5\u5bf9\u8c61Connection \u3002
\u2461\u6839\u636esql\u8bed\u53e5\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61PreparedStatement
\u2462\u4f7f\u7528\u5b9e\u9645\u53c2\u6570\u66ff\u6362PreparedStatement \u4e2d\u7684\u5360\u4f4d\u7b26\u201c?\u201d\u3002
\u2463\u6267\u884c\u66f4\u65b0\u64cd\u4f5c
\u2464\u5173\u95ed\u8d44\u6e90
\u2465\u8fd4\u56de\u5f71\u54cd\u7684\u884c\u6570result\uff08\u4e00\u4e2aint\u7c7b\u578b\uff09
\u5176\u4e2dpreparedStatement.setXXX(int parameterIndex, XXX x);\u4e2dXXX\u4e5f\u5c31\u662f\u586b\u5145\u7684\u5b9e\u9645\u53c2\u6570\u7c7b\u578b\u662f\u4e0d\u786e\u5b9a\u7684\u3002\u8fd9\u65f6\u5019\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528preparedStatement.setObject(int parameterIndex, Object x)\u6765\u8fdb\u884c\u8bbe\u7f6e\u53c2\u6570\u3002\u56e0\u4e3aObject\u662f\u6240\u6709\u7c7b\u7684\u516c\u5171\u7236\u7c7b\uff0c\u6240\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u53c2\u6570\u53ef\u4ee5\u8fbe\u5230\u4ee3\u7801\u901a\u7528\u6027\u6765\u8bbe\u7f6e\u5360\u4f4d\u7b26\u201c?\"\u3002
\u7531\u6b64\u6211\u4eec\u53ef\u4ee5\u5c06\u66f4\u65b0\u64cd\u4f5c\u5c01\u88c5\u6210\u4e00\u4e2a\u65b9\u6cd5int upDate(String sql,Object \u2026 params)\u3002
\u5176\u4e2d\u53c2\u6570sql\u4e3a\u9700\u8981\u6267\u884c\u7684\u5305\u542b\u6709\u5360\u4f4d\u7b26\u201c?\u201d\u7684SQL\u8bed\u53e5\uff0c\u6bd4\u5982\u201cdelete from book where id =?\u201d \uff0cparams\u662f\u4e00\u4e2aObject\u53ef\u53d8\u6570\u7ec4\uff0c\u5b58\u50a8\u7740preparedStatement\u4e2d\u5360\u4f4d\u7b26\u201c?\u201d\u7684\u5b9e\u9645\u53c2\u6570,\u6709\u591a\u5c11\u4e2a\u5360\u4f4d\u7b26\u5c31\u6709\u591a\u5c11\u4e2a\u5b9e\u9645\u53c2\u6570,\u5e76\u4e14\u6bcf\u4e2a\u5360\u4f4d\u7b26\u7684\u6b21\u5e8f\u548c\u5176\u5bf9\u5e94\u7684\u5b9e\u9645\u53c2\u6570\u7684\u6b21\u5e8f\u8981\u4e00\u6837\u3002<\/p>\n\n\n\n
2. \u5728\u5de5\u5177\u7c7bJDBCUtil.java\u4e2d\u66f4\u65b0\u64cd\u4f5c\u65b9\u6cd5\u7684\u5c01\u88c5\u5b9e\u73b0<\/h3>\n\n\n\n
\/**\n * \u6267\u884csql\u7684\u66f4\u65b0\u8bed\u53e5\u3002\n * @param sql \u9700\u8981\u6267\u884c\u7684sql\u8bed\u53e5\n * @param params \u9884\u5904\u7406\u5360\u4f4d\u7b26\u4e2d\u7684\u5b9e\u9645\u53c2\u6570\u6570\u7ec4\n * @return \u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\n *\/\npublic  static int upDate(String sql,Object... params){\n      if (params==null||params.length==0) return 0;\n      \/\/\u83b7\u53d6\u8fde\u63a5\u5bf9\u8c61\n    Connection connection=JDBCUtil.getConnection();\n    PreparedStatement preparedStatement=null;\n    int result = 0;\n    try {\n        \/\/\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n        preparedStatement= connection.prepareStatement(sql);\n        \/\/\u4f7f\u7528\u5b9e\u9645\u53c2\u6570\u66ff\u6362\u5360\u4f4d\u7b26\n        for (int i= 0;i < params.length;i++){\n             \/\/parameterIndex\u4ece1\u5f00\u59cb\n               preparedStatement.setObject(i+1,params[i]);\n        }\n        \/\/\u6267\u884csql\u8bed\u53e5\n        result = preparedStatement.executeUpdate();\n    } catch (SQLException e) {\n        e.printStackTrace();\n    }\n    \/\/\u5173\u95ed\u8d44\u6e90\n    JDBCUtil.close(connection,preparedStatement,null);\n      return result;\n}<\/code><\/pre>\n\n\n\n
3.\u4fee\u6539BookDao.java\u4e2d\u5c5e\u4e8e\u66f4\u65b0\u64cd\u4f5c\uff08insert,delete,update\uff09\u7684\u4ee3\u7801\u4f7f\u7528\u5c01\u88c5\u597d\u7684int upDate(String sql,Object\u2026 params)<\/h3>\n\n\n\n
package dao;\n\nimport java.sql.Connection;\nimport java.sql.Date;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport java.util.ArrayList;\nimport java.util.List;\n\nimport entity.Book;\nimport util.JDBCUtil;\n\n\/**\n * @author \u964c\u610f\u968f\u5f71\n TODO : BookDao\n *2020\u5e7410\u670830\u65e5  \u4e0b\u53489:04:08\n *\/\npublic class BookDao  {\n    \/**\n     * @param book \u9700\u8981\u4fdd\u5b58\u7684\u5bf9\u8c61\n     * @return \u4fdd\u5b58\u6210\u529f\u8fd4\u56de1\u5426\u5219\u8fd4\u56de 0\n     *\/\n    public int saveByPrepareStatement(Book book) {\n        \/\/\u9700\u8981\u6267\u884c\u7684sql\u8bed\u53e5\n        String sql = \"insert into book(name,price,status,discount,isBorrowed,createTime) values(?,?,?,?,?,?)\";\n        \/\/\u8c03\u7528\u5de5\u5177\u7c7b\u5c01\u88c5\u7684\u66f4\u65b0\u65b9\u6cd5\u8fdb\u884c\u63d2\u5165\u64cd\u4f5c\n        int result =  JDBCUtil.upDate(sql,\n                book.getName(),book.getPrice(),\n                book.getStatus(),book.getDiscount(),\n                book.isBorrowed(),book.getCreateTime()\n                );\n        return result;\n    }\n\n\n    \/**\n     * \u66f4\u65b0book\n     * @param newBook\n     * @return \u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\n     *\/\n    public int updateBookByPreparedStatement(Book newBook) {\n\n        \/\/\u9700\u8981\u6267\u884c\u7684\u66f4\u65b0sql\u8bed\u53e5\n        String sql = \"update  book  set name=?,price = ?,status = ?,discount = ?,isBorrowed = ?,createTime = ? where id = ?\";\n        \/\/\u8c03\u7528\u5de5\u5177\u7c7b\u5c01\u88c5\u7684\u66f4\u65b0\u65b9\u6cd5\u8fdb\u884c\u66f4\u65b0\u64cd\u4f5c\n        int result =  JDBCUtil.upDate(sql,\n                newBook.getName(),newBook.getPrice(),\n                newBook.getStatus(),newBook.getDiscount(),\n                newBook.isBorrowed(),newBook.getCreateTime()\n                ,newBook.getId());\n        return result;\n\n    }\n    \/**\n     * \u5220\u9664book\n     * @param id \u9700\u8981\u5220\u9664\u4e66\u7c4d\u7684ID\n     * @return \u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\n     *\/\n    public int deleteBookById(int id) {\n\n        \/\/\u9700\u8981\u6267\u884c\u7684\u5220\u9664\u7684sql\u8bed\u53e5\n        String sql = \"delete from book  where id = ?\";\n        \/\/\u8c03\u7528\u5de5\u5177\u7c7b\u5c01\u88c5\u7684\u66f4\u65b0\u65b9\u6cd5\u8fdb\u884c\u5220\u9664\u64cd\u4f5c\n        int result =  JDBCUtil.upDate(sql, id);\n        return result;\n\n    }\n\n    \/**\n     * \u901a\u8fc7ID\u67e5\u8be2book\n     * @param id \u8981\u67e5\u8be2\u7684book\u7684ID\n     * @return \u8fd4\u56deID\u5bf9\u5e94\u7684book\n     *\/\n    public Book findBookById(int id) {\n        \/\/\u9700\u8981\u6267\u884c\u7684\u67e5\u627e\u7684sql\u8bed\u53e5\n        String sql = \"select * from book  where id = ?\";\n        \/\/\u7ed3\u679c\u96c6\n        ResultSet resultSet = null;\n        Book book = null;\n        try {\n            \/\/\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = JDBCUtil.getConnection();\n            \/\/\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            \/\/\u8bbe\u7f6eid\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u503c\n            preparedStatement.setInt(1, id);\n            \/\/\u5f00\u59cb\u6267\u884c\u67e5\u8be2\u8bed\u53e5,\u5e76\u8fd4\u56de\u67e5\u8be2\u7684\u7ed3\u679c\u96c6\n            resultSet = preparedStatement.executeQuery();\n            \/\/\u5982\u679c\u67e5\u8be2\u5230\u7ed3\u679c\u4e0d\u4e3a\u7a7a\u800c\u662f\u6709\u8bb0\u5f55\n            if(resultSet.next()) {\n            \/\/\u83b7\u53d6book\u7684name\n            String name = resultSet.getString(\"name\");\n            \/\/\u83b7\u53d6book\u7684status\n            byte status = resultSet.getByte(\"status\");\n            \/\/\u83b7\u53d6book\u7684price\n            double price = resultSet.getDouble(\"price\");\n            \/\/\u83b7\u53d6book\u7684discount\n            float discount = resultSet.getFloat(\"discount\");\n            \/\/\u83b7\u53d6book\u7684isBorrowed\n            boolean isBorrowed = resultSet.getBoolean(\"isBorrowed\");\n            \/\/\u83b7\u53d6book\u7684createTime\n            Date date = resultSet.getDate(\"createTime\");\n            book = new Book();\n            book.setBorrowed(isBorrowed);\n            book.setDiscount(discount);\n            book.setId(id);\n            book.setPrice(price);\n            book.setName(name);\n            book.setStatus(status);\n            book.setCreateTime(date);\n            }\n            \/\/\u91ca\u653e\u8d44\u6e90,\u5148\u5f00\u542f\u7684\u540e\u91ca\u653e\n            JDBCUtil.close(connection, preparedStatement, resultSet);\n        } catch (SQLException e) {\n            e.printStackTrace();\n            book = null;\n        }\n\n\n        return book;\n\n    }\n    \/**\n     * \u67e5\u8be2\u6240\u6709\u56fe\u4e66\n     * @return \u8fd4\u56deList<book>\n     *\/\n    public List<Book> findAllBook() {\n        \/\/\u62fc\u63a5\u9700\u8981\u6267\u884c\u7684\u67e5\u627e\u7684sql\u8bed\u53e5\n        String sql = \"select * from book \";\n        \/\/\u7ed3\u679c\u96c6\n        ResultSet resultSet = null;\n        List<Book> bookList = null;\n        try {\n            \/\/\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = JDBCUtil.getConnection();\n            \/\/\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            \/\/\u5f00\u59cb\u6267\u884c\u67e5\u8be2\u8bed\u53e5,\u5e76\u8fd4\u56de\u67e5\u8be2\u7684\u7ed3\u679c\u96c6\n            resultSet = preparedStatement.executeQuery();\n            bookList = new ArrayList<>();\n            \/\/\u5982\u679c\u67e5\u8be2\u5230\u7ed3\u679c\u4e0d\u4e3a\u7a7a\u800c\u662f\u6709\u8bb0\u5f55\n            while(resultSet.next()) {\n            \/\/\u83b7\u53d6book\u7684ID\n            int id = resultSet.getInt(\"id\");\n            \/\/\u83b7\u53d6book\u7684name\n            String name = resultSet.getString(\"name\");\n            \/\/\u83b7\u53d6book\u7684status\n            byte status = resultSet.getByte(\"status\");\n            \/\/\u83b7\u53d6book\u7684price\n            double price = resultSet.getDouble(\"price\");\n            \/\/\u83b7\u53d6book\u7684discount\n            float discount = resultSet.getFloat(\"discount\");\n            \/\/\u83b7\u53d6book\u7684isBorrowed\n            boolean isBorrowed = resultSet.getBoolean(\"isBorrowed\");\n            \/\/\u83b7\u53d6book\u7684createTime\n            Date date = resultSet.getDate(\"createTime\");\n            Book book = new Book();\n            book.setBorrowed(isBorrowed);\n            book.setDiscount(discount);\n            book.setId(id);\n            book.setPrice(price);\n            book.setName(name);\n            book.setStatus(status);\n            book.setCreateTime(date);\n            bookList.add(book);\n            }\n\n            \/\/\u91ca\u653e\u8d44\u6e90,\u5148\u5f00\u542f\u7684\u540e\u91ca\u653e\n            JDBCUtil.close(connection, preparedStatement, resultSet);\n        } catch (SQLException e) {\n            e.printStackTrace();\n            bookList = null;\n        }\n\n\n        return bookList;\n\n    }\n\n}<\/code><\/pre>\n\n\n\n
4.\u4f7f\u7528JUnit\u5355\u5143\u6d4b\u8bd5<\/h3>\n\n\n\n
package test;\n\nimport java.util.Date;\nimport java.util.List;\n\nimport org.junit.jupiter.api.Test;\n\nimport dao.BookDao;\nimport entity.Book;\n\nclass BookDaoTest {\n    @Test\n    void testUpdateBook() {\n        Book newBook = new Book();\n        newBook.setId(1);\n        newBook.setName(\"\u7ea2\u697c\u68a6\");\n        newBook.setCreateTime(new Date());\n        newBook.setBorrowed(Book.isBorrowed_FALSE);\n        newBook.setPrice(60.5);\n        newBook.setStatus(Book.STATUS_NORMAL);\n        BookDao bookDao = new BookDao();\n        int result = bookDao.updateBookByPreparedStatement(newBook);\n        if(result == 1) {\n            System.out.println(\"\u66f4\u65b0\u4e66\u7c4d\u6210\u529f\uff01\");\n        }else {\n            System.out.println(\"\u66f4\u65b0\u4e66\u7c4d\u5931\u8d25\uff01\");\n        }\n\n    }\n    @Test\n    void testdeleteBookById() {\n        BookDao bookDao = new BookDao();\n        int result = bookDao.deleteBookById(2);\n        if(result == 1) {\n            System.out.println(\"\u5220\u9664\u4e66\u6210\u529f\uff01\");\n        }else {\n            System.out.println(\"\u5220\u9664\u4e66\u5931\u8d25\uff01\");\n        }\n\n    }\n    @Test\n    void testFindBookById() {\n        BookDao bookDao = new BookDao();\n        Book book = bookDao.findBookById(3);\n        if(book != null) {\n          System.out.println(\"\u67e5\u627e\u4e66\u7c4d\u6210\u529f:\"+ book);\n        }else {\n            System.out.println(\"\u6570\u636e\u5e93\u4e2d\u4e0d\u5b58\u5728\u8be5\u4e66\u7c4d\uff01\");\n        }\n\n    }\n    @Test\n    void testFindAllBook() {\n        BookDao bookDao = new BookDao();\n        List<Book> bookList = bookDao.findAllBook();\n        if(bookList == null || bookList.size() == 0) {\n            System.out.println(\"\u4e66\u7c4d\u4e3a\u7a7a\uff01\");\n        }else {\n            for(Book book : bookList) {\n                System.out.println(book);\n            }\n        }\n\n\n    }\n\n}<\/code><\/pre>\n\n\n\n
\u7ecf\u8fc7\u6d4b\u8bd5\u53d1\u73b0\u53ef\u4ee5\u6b63\u5e38\u8fdb\u884c\u6570\u636e\u5e93\u7684\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n\n\n\n
5.\u672c\u6b21\u5b9e\u9a8c\u73af\u5883<\/h3>\n\n\n\n
eclipse219 \uff0cjdk1.8,mysql8.0<\/strong><\/p>\n\n\n\n
6.\u6d4b\u8bd5\u6e90\u4ee3\u7801\u5df2\u7ecf\u4e0a\u4f20\u5230\u4e2a\u4eba\u670d\u52a1\u5668\uff0c\u5982\u6709\u9700\u8981\u8bf7\u81ea\u884c\u4e0b\u8f7d\uff1a<\/h3>\n\n\n\n
mysqlProject4<\/a>\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"
MySQL\u6570\u636e\u5e93\u5165\u95e8\u5b66\u4e60\uff08\u56db\uff09\u2014\u2014\u4f7f\u7528\u5de5\u5177\u7c7b\u5c01\u88c5JDBC\u5b9e\u73b0MySQL\u7684\u66f4\u65b0\u64cd\u4f5c 1.\u524d\u8a00 \u6211\u4eec\u77e5\u9053\uff0c\u4e8b\u5b9e\u4e0a\uff0cMySQL\u7684 \u201c\u589e\u5220 …<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[94],"tags":[96,95,102,105],"_links":{"self":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/348"}],"collection":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/comments?post=348"}],"version-history":[{"count":1,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/348\/revisions"}],"predecessor-version":[{"id":350,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/348\/revisions\/350"}],"wp:attachment":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/media?parent=348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/categories?post=348"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/tags?post=348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}