{"id":330,"date":"2020-10-31T00:24:10","date_gmt":"2020-10-30T16:24:10","guid":{"rendered":"http:\/\/moyisuiying.com\/?p=330"},"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%e4%b8%80%ef%bc%89-%e5%88%9b%e5%bb%ba%e6%95%b0%e6%8d%ae%e5%ba%93%e5%b9%b6java%e5%ae%9e%e7%8e%b0jdbc","status":"publish","type":"post","link":"http:\/\/moyisuiying.com\/index.php\/javastudy\/mysql\/330.html","title":{"rendered":"MySQL\u6570\u636e\u5e93\u5165\u95e8\u5b66\u4e60\uff08\u4e00\uff09\u2014\u2014\u521b\u5efa\u6570\u636e\u5e93\u5e76Java\u5b9e\u73b0JDBC\u8fde\u63a5\u6570\u636e\u5e93\u540e\u6dfb\u52a0\u6570\u636e"},"content":{"rendered":"\n<h1>MySQL\u6570\u636e\u5e93\u5165\u95e8\u5b66\u4e60\uff08\u4e00\uff09\u2014\u2014\u521b\u5efa\u6570\u636e\u5e93\u5e76Java\u5b9e\u73b0JDBC\u8fde\u63a5\u6570\u636e\u5e93\u540e\u6dfb\u52a0\u6570\u636e<\/h1>\n\n\n\n<h2>1.MySQL\u7b80\u4ecb\uff1a<\/h2>\n\n\n\n<p>MySQL\u662f\u4e00\u79cdDBMS\uff0c\u800c\u4e14\u662f\u4e00\u79cd\u4e00\u4e2a\u5c0f\u578b\u7684\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u30022008\u5e741\u670816\u65e5MySQL AB\u88abSun\u516c\u53f8\u6536\u8d2d\u3002\u800c2009\u5e74\uff0cSUN\u53c8\u88abOracle\u6536\u8d2d\u3002\u5c31\u8fd9\u6837\u5982\u540c\u4e00\u4e2a\u8f6e\u56de\uff0cMySQL\u6210\u4e3a\u4e86Oracle\u516c\u53f8\u7684\u53e6\u4e00\u4e2a\u6570\u636e\u5e93\u9879\u76ee\u3002<br>MySQL\u5b83\u5728\u4e16\u754c\u8303\u56f4\u5185\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u5b89\u88c5\u548c\u4f7f\u7528\uff0c\u5e94\u8be5\u662f\u4f7f\u7528\u4eba\u6570\u6700\u591a\u7684\u6570\u636e\u5e93\u8f6f\u4ef6\u4e86\uff0c\u56e0\u4e3a\u5b83\u6709\u7740\u8fd9\u6837\u7684\u7279\u6027\uff1a<br>\u6210\u672c\u2014\u2014MySQL\u662f\u5f00\u6e90\u8f6f\u4ef6\uff0c\u53ef\u4ee5\u514d\u8d39\u4f7f\u7528\u548c\u4fee\u6539\u3002<br>\u6027\u80fd\u2014\u2014MySQL\u6027\u80fd\u5f88\u597d\u5904\u7406\u901f\u5ea6\u5f88\u5feb\u3002<br>\u7b80\u5355\u2014\u2014MySQL\u5f88\u5bb9\u6613\u5b89\u88c5\u548c\u4f7f\u7528\uff0c\u5bf9\u65b0\u624b\u53cb\u597d\u3002<br>MySQL\u6570\u636e\u5e93\u8f6f\u4ef6\u4e5f\u662f\u4f7f\u7528\u6700\u5e38\u7528\u7684\u6570\u636e\u5e93\u7ba1\u7406\u8bed\u8a00\uff1a\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff08SQL\uff09\u8fdb\u884c\u6570\u636e\u5e93\u7ba1\u7406\u548c\u64cd\u4f5c\u3002<\/p>\n\n\n\n<h2>2.\u5728MySQL\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u8868\u4ee5\u53ca\u5728Java\u4e2d\u521b\u5efa\u5bf9\u5e94\u5b9e\u4f53\u7c7b<\/h2>\n\n\n\n<h3>2.1\u521b\u5efa\u6570\u636e\u5e93mysqldemo<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>create database if not exists mysqldemo;<\/code><\/pre>\n\n\n\n<h3>2.2\u4f7f\u7528\u6570\u636e\u5e93mysqldemo\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>use mysqldemo;<\/code><\/pre>\n\n\n\n<h3>2.3\u521b\u5efa\u8868book\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>create table if not exists book(id int primary key auto_increment,name varchar(20),price double,status tinyint(1),discount float,isBorrowed tinyint(2) default 0, createTime datetime default now());<\/code><\/pre>\n\n\n\n<p>\u4e3a\u4e86\u5c3d\u53ef\u80fd\u6f14\u793aMySQL\u4e2d\u7684\u6570\u636e\u7c7b\u578b\u548cJava\u4e2d\u7c7b\u578b\u7684\u5173\u7cfb\uff0c\u8fd9\u91cc\u5c06Book\u8868\u7684\u5c5e\u6027\u7c7b\u578b\u6709int , varchar,doble,tinyint,float,tinyint,datetime\u3002\u5728\u8fd9\u4e2a\u8868\u4e2disBorrowed \u5bf9\u5e94\u7684\u5b9e\u4f53\u7c7b\u662f\u4e00\u4e2aBoolean\u7c7b\u578b\uff0c\u4f46\u662f\u5728MySQL\u4e2d\u4e0d\u652f\u6301Boolean\u7c7b\u578b\u7684\u5b58\u50a8\uff0c\u4f46\u662f\u53ef\u4ee5\u901a\u8fc7tinyint\u6765\u4ee3\u66ffBoolean\u8fdb\u884c\u5b58\u50a8\uff0c\u5728\u521b\u5efa\u8868\u7684\u65f6\u5019\u7c7b\u578b\u9009\u62e9<strong>tinyint<\/strong>,\u957f\u5ea6*\u5fc5\u987b\\\u4e3a1,\u5373tinyint(1).\u6570\u636e\u5c31\u4fdd\u5b580\u6216\u80051\uff0c\u8fd9\u6837,\u5728java\u540e\u7aef\u53d6\u51fa\u6570\u636e\u7684\u65f6\u5019\u624d\u4f1a<strong>\u81ea\u52a8\u8f6c\u5316<\/strong>\u6210true(\u6570\u636e\u5e93\u4e2d\u76841)\u548cfalse(\u6570\u636e\u5e93\u4e2d\u76840)\u3002<\/p>\n\n\n\n<h3>2.4\u521b\u5efabook\u8868\u5bf9\u5e94\u7684Java\u5b9e\u4f53\u7c7b<\/h3>\n\n\n\n<p>\u5bf9\u5e94\u7684\u5b9e\u4f53\u7c7b\uff0c\u5728\u8fd9\u4e2a\u5b9e\u4f53\u7c7b\u4e2d\uff0c\u7c7b\u7684\u5c5e\u6027\u548c\u6570\u636e\u5e93\u8868\u4e2d\u7684\u5c5e\u6027\u540d\u4e00\u81f4\u65b9\u4fbf\u4e4b\u540e\u7684\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package entity;\n\nimport java.util.Date;\n\n\/**\n * @author \u964c\u610f\u968f\u5f71\n * @create 2020-01-31 17:34\n * @desc \u4e66\u7c4d\u7c7b\n **\/\npublic class Book {\n    \/\/\u4e66\u7c4d\u7684\u552f\u4e00\u4e3b\u952e\uff0c\u7531\u6570\u636e\u5e93\u81ea\u52a8\u751f\u6210\n    private  int id;\n    \/\/\u4e66\u7c4d\u540d\u79f0\n    private  String name;\n    \/\/\u4ef7\u683c\n    private double price;\n     \/\/\u72b6\u6001\n    private byte status;\n    \/**\u72b6\u6001\u6b63\u5e38*\/\n    public final static byte STATUS_NORMAL=1;\n    \/**\u72b6\u6001\u5f02\u5e38*\/\n    public final static byte STATUS_ERRO=0;\n    \/\/\u6298\u6263\n    private float  discount;\n    \/\/\u662f\u5426\u88ab\u501f\u9605\n    boolean isBorrowed;\n    \/**\u88ab\u501f\u9605*\/\n    public final static boolean isBorrowed_TRUE = true;\n    \/**\u672a\u88ab\u501f\u9605*\/\n    public final static boolean isBorrowed_FALSE = false;\n    \/\/\u521b\u5efa\u65f6\u95f4\n    private Date createTime;\n    public Book() {\n    }\n    @SuppressWarnings(\"javadoc\")\n    public Book(int id, String name, double price,byte status, float discount, boolean isBorrowed, Date createTime) {\n        this.id = id;\n        this.name = name;\n        this.price = price;\n        this.status = status;\n        this.discount = discount;\n        this.isBorrowed = isBorrowed;\n        this.createTime = createTime;\n    }\n    public int getId() {\n        return id;\n    }\n    public String getName() {\n        return name;\n    }\n    public double getPrice() {\n        return price;\n    }\n    public byte getStatus() {\n        return status;\n    }\n    public float getDiscount() {\n        return discount;\n    }\n    public boolean isBorrowed() {\n        return isBorrowed;\n    }\n    public Date getCreateTime() {\n        return createTime;\n    }\n    public void setId(int id) {\n        this.id = id;\n    }\n    public void setName(String name) {\n        this.name = name;\n    }\n    public void setPrice(double price) {\n        this.price = price;\n    }\n    public void setStatus(byte status) {\n        this.status = status;\n    }\n    public void setDiscount(float discount) {\n        this.discount = discount;\n    }\n    public void setBorrowed(boolean isBorrowed) {\n        this.isBorrowed = isBorrowed;\n    }\n    public void setCreateTime(Date createTime) {\n        this.createTime = createTime;\n    }\n\n\n}<\/code><\/pre>\n\n\n\n<h3>2.5\u5411book\u8868\u63d2\u5165\u6570\u636e\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code> insert into book(name,price,status,discount,isBorrowed,createTime) values(\"\u56f4\u57ce\",45.5,1,7.5,false,now());<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code> insert into book(name,price,status,discount,isBorrowed,createTime) values(\"\u5343\u5e74\u4e00\u53f9\",55.0,1,8.0,true,now());<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>insert into book(name,price,status,discount,isBorrowed,createTime) values(\"\u897f\u6e38\u8bb0\",50.0,1,9.0,false,now());<\/code><\/pre>\n\n\n\n<h3>2.6\u4f7f\u7528select\u8bed\u53e5\u67e5\u8be2book\u8868\u7684\u6570\u636e<\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img   class=\"lazyload\" data-src=\"https:\/\/img-blog.csdnimg.cn\/20201030232115278.png#pic_center\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/figure >\n<noscript><img src=\"https:\/\/img-blog.csdnimg.cn\/20201030232115278.png#pic_center\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/figure><\/noscript>\n\n\n\n<h2>3.JDBC\u8fde\u63a5MySQL\u6570\u636e\u5e93<\/h2>\n\n\n\n<h3>3.1JDBC\u7b80\u4ecb<\/h3>\n\n\n\n<p>Java\u6570\u636e\u5e93\u8fde\u63a5\uff0c\uff08Java Database Connectivity\uff0c\u7b80\u79f0JDBC\uff09\u662fJava\u8bed\u8a00\u4e2d\u7528\u6765\u89c4\u8303\u5ba2\u6237\u7aef\u7a0b\u5e8f\u5982\u4f55\u6765\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u5e94\u7528\u7a0b\u5e8f\u63a5\u53e3\uff0c\u63d0\u4f9b\u4e86\u8bf8\u5982\u67e5\u8be2\u548c\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u6570\u636e\u7684\u65b9\u6cd5\u3002JDBC\u4e5f\u662fSun Microsystems\u7684\u5546\u6807\u3002\u6211\u4eec\u901a\u5e38\u8bf4\u7684JDBC\u662f\u9762\u5411\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u3002<\/p>\n\n\n\n<h3>3.2\u8fde\u63a5MySQL\u6570\u636e\u5e93<\/h3>\n\n\n\n<p>jdbc\u8fde\u63a5\u6570\u636e\u5e93\u603b\u4f53\u5c31\u662f\u6709\u4e94\u4e2a\u6b65\u9aa4\uff0c\u7b80\u8bb0\u4e3a \u201c<strong>\u8d3e\u8fde\u9884\u6267\u91ca<\/strong>\u201d\uff1a<br>\u201c\u8d3e\u201d\uff1a\u52a0\u8f7dMySQL\u6570\u636e\u5e93\u9a71\u52a8\u3002<br>\u201c\u8fde\u201d\uff1a\u901a\u8fc7DriverManager.getConnection(url,user,password)\u83b7\u53d6\u8fde\u63a5\u5bf9\u8c61Connection\u3002\u5176\u4e2durl\u4e3a\u9700\u8981\u8fde\u63a5\u7684\u6570\u636e\u5e93\u540d\u7684\u5730\u5740\uff0cuser\u4e3a\u767b\u5f55\u6570\u636e\u5e93\u7684\u7528\u6237\u540d\uff0cpassword\u4e3a\u767b\u5f55\u6570\u636e\u5e93\u7684\u5bc6\u7801\u3002<br>\u201c\u9884\u201d\uff1a\u901a\u8fc7connection.createStatement();\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\u3002<br>\u201c\u6267\u201d\uff1a\u6267\u884cSQL\u8bed\u53e5\u3002<br>\u201c\u91ca\u201d\uff1a\u91ca\u653e\u8fde\u63a5\u8d44\u6e90\u3002<\/p>\n\n\n\n<h3>3.3Statement\u548cPreparedStatement\u7684\u5f02\u540c<\/h3>\n\n\n\n<p><strong>\u540c\uff1a<\/strong><br>1.PreparedStatement\u548cStatement\u90fd\u662f\u7528\u6765\u6267\u884cSQL\u67e5\u8be2\u8bed\u53e5\u7684API\u4e4b\u4e00\u3002<br>2.PreparedStatement\u63a5\u53e3\u7ee7\u627f\u4e86Statement\u63a5\u53e3\u3002<br><strong>\u5f02\uff1a<\/strong><\/p>\n\n\n\n<ol><li>Statement\u4e0d\u5bf9sql\u8bed\u53e5\u4f5c\u5904\u7406\uff0c\u76f4\u63a5\u4ea4\u7ed9\u6570\u636e\u5e93\uff1b\u800cPreparedStatement\u652f\u6301\u9884\u7f16\u8bd1\uff0c\u4f1a\u5c06\u7f16\u8bd1\u597d\u7684sql\u8bed\u53e5\u653e\u5728\u6570\u636e\u5e93\u7aef\uff0c\u76f8\u5f53\u4e8e\u7f13\u5b58\u3002\u5bf9\u4e8e\u591a\u6b21\u91cd\u590d\u6267\u884c\u7684sql\u8bed\u53e5\uff0c\u4f7f\u7528PreparedStatement\u53ef\u4ee5\u4f7f\u5f97\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u66f4\u9ad8\u3002<\/li><li>Statement\u7684sql\u8bed\u53e5\u4f7f\u7528\u5b57\u7b26\u4e32\u62fc\u63a5\u7684\u65b9\u5f0f\uff0c\u5bb9\u6613\u5bfc\u81f4\u51fa\u9519\uff0c\u4e14\u5b58\u5728sql\u6ce8\u5165\u7684\u98ce\u9669\uff1bPreparedStatement\u4f7f\u7528\u201c?\u201d\u5360\u4f4d\u7b26\u63d0\u5347\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u5e76\u4e14\u8fd9\u79cd\u7ed1\u5b9a\u53c2\u6570\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u6709\u6548\u7684\u9632\u6b62sql\u6ce8\u5165\u3002<\/li><\/ol>\n\n\n\n<h3>3.4\u4f7f\u7528Statement\u6765\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\u6267\u884cSQL\u8bed\u53e5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code> \/**\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 saveByStatement(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(\\\"\"+ book.getName()+\"\\\",\\\"\"\n        + book.getPrice()+\"\\\",\\\"\"+book.getStatus()+\"\\\",\\\"\"+book.getDiscount()+\"\\\",\" + book.isBorrowed()+\",\\\"\" + book.getCreateTime().toLocaleString()+\"\\\");\";\n        System.out.println(sql);\n        int result = 0;\n        try {\n            \/\/1.\u52a0\u8f7d\u9a71\u52a8\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n        } catch (ClassNotFoundException e) {\n            e.printStackTrace();\n        }\n\n        try {\n            \/\/2.\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/mysqldemo?serverTimezone=UTC\", \"root\", \"root\");\n            \/\/3.\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\n            Statement statement = connection.createStatement();\n            \/\/4.\u6267\u884csql\u8bed\u53e5\u5e76\u8fd4\u56de\u6267\u884c\u7ed3\u679c\u5f71\u54cd\u7684\u884c\u6570\n            result = statement.executeUpdate(sql);\n            \/\/5.\u91ca\u653e\u8d44\u6e90,\u5148\u5f00\u542f\u7684\u540e\u91ca\u653e\n            statement.close();\n            connection.close();\n            return result;\n\n        } catch (SQLException e) {\n            \/\/ TODO Auto-generated catch block\n            e.printStackTrace();\n        }\n\n       return result;\n    }<\/code><\/pre>\n\n\n\n<h3>3.5\u4f7f\u7528PreparedStatement\u6765\u521b\u5efa\u9884\u5904\u7406\u5bf9\u8c61\u6267\u884cSQL\u8bed\u53e5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code> \/**\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            \/\/\u52a0\u8f7d\u9a71\u52a8\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n        } catch (ClassNotFoundException e) {\n            e.printStackTrace();\n        }\n\n        try {\n            \/\/\u83b7\u53d6\u521b\u5efa\u8fde\u63a5\n            Connection connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/mysqldemo?serverTimezone=UTC\", \"root\", \"root\");\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\t\tstatement.close();\n\t\tconnection.close();\n\n        } catch (SQLException e) {\n            \/\/ TODO Auto-generated catch block\n            e.printStackTrace();\n        }\n\n       return result;\n    }<\/code><\/pre>\n\n\n\n<p>connection.prepareStatement(sql)\u7528\u6765\u4ea7\u751f\u4e00\u4e2aPreparedStatement\u9884\u5904\u7406\u5bf9\u8c61\uff0c\u6b64\u65f6\u9700\u8981\u63d2\u5165\u5230\u6570\u636e\u5e93\u7684\u503c\u4f7f\u7528\u201c?\u201d\u6765\u4ee3\u66ff\uff0c\u8fd9\u4e2a\u5c31\u53eb\u5360\u4f4d\u7b26\u3002\u6b64\u65f6SQL\u4e2d\u7684\u64cd\u4f5c\u53c2\u6570\u4ece\u5de6\u5230\u53f3\u548c\u6bcf\u4e2a\u5360\u4f4d\u7b26\u4e00\u4e00\u5bf9\u5e94\u3002\u6bd4\u5982String sql = \"insert into book(name,price,status,discount,isBorrowed,createTime) values(?,?,?,?,?,?)\";\u4e2d\uff0cname\u7684\u5bf9\u5e94\u5360\u4f4d\u7b26\u662f\u7b2c1\u4e2a\u201c?\",price\u5bf9\u5e94\u7684\u5360\u4f4d\u7b26\u662f\u7b2c2\u4e2a\u201c?\u201d\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002\u6ce8\u610f\uff0c\u5728preparedStatement.setXX\uff08int parameterIndex, XX x\uff09\u65f6\uff0c<strong>parameterIndex\u662f\u4ece1\u5f00\u59cb\u7684<\/strong>\uff0c\u800c\u4e0d\u662f\u4ece0\u5f00\u59cb\uff01\u5e76\u4e14preparedStatement.setXX\uff08int parameterIndex, XX x\uff09\u4e2dsetXX\u7684\u7c7b\u578b\u8981\u548c\u771f\u5b9e\u503cx\u4e00\u81f4\u3002\u6bd4\u5982preparedStatement.setString(1, book.getName());\u4e2dbook.getName()\u7684\u503c\u5c31\u662fpreparedStatement.setString\uff08\uff09\u4e2dsetXX\u7684XX,\u4e5f\u5c31\u662fString\u7c7b\u578b\uff0c\u5176\u5b83\u7684\u4f9d\u6b21\u7c7b\u63a8\u3002\u6ce8\u610fpreparedStatement.setBoolean(5, book.isBorrowed());\u4e2d\u8fd9\u91cc\u8bbe\u7f6e\u7684\u662fBoolean\u7c7b\u578b\uff0c\u4f46\u662f\u6211\u4eec\u77e5\u9053MySQL\u662f\u6ca1\u6709Boolean\u7c7b\u578b\u7684\u3002\u800c\u5728\u4e4b\u524d\u6211\u4eec\u8bf4\u8fc7\u5728\u6570\u636e\u5e93\u4e2d\u8fd9\u4e2aisBorrowed\u5c5e\u6027\u662ftinyint(1)\uff0c\u5f53Java\u5728\u53d6\u503c\u6216\u8005\u8bbe\u7f6e\u503c\u65f6\uff0c\u4f1a\u81ea\u52a8\u5c06true\u8f6c\u6362\u4e3a1\uff0c\u5c06false\u8f6c\u6362\u4e3a0\uff0c\u4ece\u800c\u6570\u636e\u5e93\u8fbe\u5230\u76f8\u5f53\u4e8e\u5b58\u50a8Boolean\u7c7b\u578b\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\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()));<\/code><\/pre>\n\n\n\n<p>\u901a\u8fc7\u4f7f\u7528\u771f\u5b9e\u503c\u66ff\u6362\u5360\u4f4d\u7b26\uff0c\u6700\u7ec8\u6267\u884cpreparedStatement.executeUpdate()\u65f6\u7684\u8bed\u53e5\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>insert into book(name,price,status,discount,isBorrowed,createTime) values(\"\u7ea2\u697c\u68a6\",\"60.5\",\"1\",\"8.0\",false,\"2020-10-31 0:01:11\");<\/code><\/pre>\n\n\n\n<h3>3.6\u5e38\u7528\u7684Statement\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n<p>1\uff0cboolean execute \u5141\u8bb8\u6267\u884c\u67e5\u8be2\u8bed\u53e5\u3001\u66f4\u65b0\u8bed\u53e5\u3001DDL\u8bed\u53e5<br>\u8fd4\u56de\u503c\u4e3atrue\u65f6\uff0c\u8868\u793a\u6267\u884c\u7684\u662f\u67e5\u8be2\u8bed\u53e5\uff0c\u53ef\u4ee5\u901a\u8fc7getResultSet\u65b9\u6cd5\u83b7\u53d6\u7ed3\u679c\uff1b\u8fd4\u56de\u503c\u4e3afalse\u65f6\uff0c\u6267\u884c\u7684\u662f\u66f4\u65b0\u8bed\u53e5\u6216DDL\u8bed\u53e5\u3002<br>2\uff0cgetUpdateCount\u65b9\u6cd5 \u83b7\u53d6\u66f4\u65b0\u7684\u8bb0\u5f55\u6570\u91cf\u3002<br>3\uff0cint executeUpdate(String sql)\u6267\u884c\u7ed9\u5b9a SQL \u8bed\u53e5<br>\u8be5\u8bed\u53e5\u53ef\u80fd\u4e3a INSERT\u3001UPDATE \u6216 DELETE \u8bed\u53e5\uff0c\u6216\u8005\u4e0d\u8fd4\u56de\u4efb\u4f55\u5185\u5bb9\u7684 SQL \u8bed\u53e5\uff08\u5982 SQL DDL \u8bed\u53e5\uff09\u3002<br>4\uff0cResultSet executeQuery(String sql) \u6267\u884c\u7ed9\u5b9a\u7684 SQL \u8bed\u53e5<br>\u8be5\u8bed\u53e5\u8fd4\u56de\u5355\u4e2a ResultSet \u5bf9\u8c61\u3002\u8fd4\u56de\u503c\u662f\u66f4\u65b0\u7684\u8bb0\u5f55\u6570\u91cf\u3002<\/p>\n\n\n\n<h2>4.\u4f7f\u7528JUnit\u6d4b\u8bd5<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>@Test\n    void testSaveBookByStament() {\n        Book book = new Book();\n        book.setName(\"\u7ea2\u697c\u68a6\");\n        book.setBorrowed(Book.isBorrowed_FALSE);\n        book.setCreateTime(new Date());\n        book.setDiscount(8);\n        book.setPrice(60.5);\n        book.setStatus(Book.STATUS_NORMAL);\n        BookDao bookDao = new BookDao();\n        int result = bookDao.saveByStatement(book);\n        if(result == 1) {\n            System.out.println(\"\u6dfb\u52a0\u65b0\u4e66\u6210\u529f\uff01\");\n        }else {\n            System.out.println(\"\u6dfb\u52a0\u65b0\u4e66\u5931\u8d25\uff01\");\n        }\n\n\n    }<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image\"><img   class=\"lazyload\" data-src=\"https:\/\/img-blog.csdnimg.cn\/20201031001246103.png#pic_center\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/figure >\n<noscript><img src=\"https:\/\/img-blog.csdnimg.cn\/20201031001246103.png#pic_center\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/figure><\/noscript>\n\n\n\n<figure class=\"wp-block-image\"><img   class=\"lazyload\" data-src=\"https:\/\/img-blog.csdnimg.cn\/20201031001312138.png?x-oss-process=image\/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE4NzAwMjI=,size_16,color_FFFFFF,t_70#pic_center\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/figure >\n<noscript><img src=\"https:\/\/img-blog.csdnimg.cn\/20201031001312138.png?x-oss-process=image\/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE4NzAwMjI=,size_16,color_FFFFFF,t_70#pic_center\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"\/><\/figure><\/noscript>\n\n\n\n<h2><strong>5.\u5b9e\u9a8c\u73af\u5883<\/strong><br><em>eclipse 2019\uff0c JDK1.8 \uff0cMySQL8.0<\/em><\/h2>\n\n\n\n<h2>6.\u672c\u6b21\u5b9e\u9a8c\u6e90\u4ee3\u7801\u5df2\u4e0a\u4f20\u5230\u670d\u52a1\u5668\uff0c\u5982\u6709\u9700\u8981\u8bf7\u70b9\u51fb\u4e0b\u8f7d\uff1a<\/h2>\n\n\n\n<div class=\"wp-block-file\"><a href=\"http:\/\/moyisuiying.com\/wp-content\/uploads\/2020\/10\/mysqlProject.rar\">mysqlProject<\/a><a href=\"http:\/\/moyisuiying.com\/wp-content\/uploads\/2020\/10\/mysqlProject.rar\" class=\"wp-block-file__button\" download>\u4e0b\u8f7d<\/a><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u6570\u636e\u5e93\u5165\u95e8\u5b66\u4e60\uff08\u4e00\uff09\u2014\u2014\u521b\u5efa\u6570\u636e\u5e93\u5e76Java\u5b9e\u73b0JDBC\u8fde\u63a5\u6570\u636e\u5e93\u540e\u6dfb\u52a0\u6570\u636e 1.MySQL\u7b80\u4ecb\uff1a MySQL\u662f\u4e00\u79cdDB &#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[94],"tags":[96,95,97,98,99],"_links":{"self":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/330"}],"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=330"}],"version-history":[{"count":4,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/330\/revisions"}],"predecessor-version":[{"id":342,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/330\/revisions\/342"}],"wp:attachment":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/media?parent=330"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/categories?post=330"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/tags?post=330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}