IDEA 格式化SQL代碼技巧分享

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寫在前面

IntelliJ IDEA集成瞭很多我們開發中常用的工具，Linux連接，Git,數據庫操作…

這裡我們介紹，IDEA集成數據庫操作，並對SQL可格式化…

通過命令,但是在合適的執行文件中…

Ctrl Alt L

1.1、建立連接，數據庫服務器地址，賬號，密碼等…

1.2、基本操作，很多，增刪改查，控制臺SQl編寫等等

SQL執行控制臺，這裡是格式化之後的，我們平時手寫的SQL都是沒有格式化的，註意這裡提供瞭輸入框，操作占位符的參數也很方便…

那麼這裡的格式化的SQL是怎麼實現的呢？？

這裡的哈，IDEA的快捷鍵 Ctrl + Alt + L，就可以格式化SQL

補充：解決idea的src目錄下不能編譯SQL語句的xml配置文件的問題

一：正常配置下的情況

1.編譯的目錄下不會編譯映射配置文件.xml，但是resources目錄中的文件都被編譯出來。

2.pom.xml文件的配置

<?xml version="1.0" encoding="UTF-8"?> 
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 
 <groupId>com.sly</groupId>
 <artifactId>hrm01</artifactId>
 <version>1.0-SNAPSHOT</version>
 <packaging>war</packaging>
 
 <name>hrm01 Maven Webapp</name>
 <!-- FIXME change it to the project's website -->
 <url>http://www.example.com</url>
 
 <properties>
 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <maven.compiler.source>1.7</maven.compiler.source>
 <maven.compiler.target>1.7</maven.compiler.target>
 </properties>
 
 <dependencies>
 <dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>4.11</version>
  <scope>test</scope>
 </dependency>
 <!-- 導入jar包
 1.spring的jar包：11個
 com.springsource.org.aopalliance-1.0.0.jar
 com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
 spring-aop-5.0.1.RELEASE.jar
 spring-aspects-5.0.1.RELEASE.jar
 spring-beans-5.0.1.RELEASE.jar
 spring-context-5.0.1.RELEASE.jar
 spring-core-5.0.1.RELEASE.jar
 spring-expression-5.0.1.RELEASE.jar
 spring-jcl-5.0.1.RELEASE.jar
 spring-jdbc-5.0.1.RELEASE.jar
 spring-tx-5.0.1.RELEASE.jar
 -->
  <!-- https://mvnrepository.com/artifact/org.aopalliance/com.springsource.org.aopalliance -->
  <dependency>
  <groupId>org.aopalliance</groupId>
  <artifactId>com.springsource.org.aopalliance</artifactId>
  <version>1.0.0</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/org.aspectj/com.springsource.org.aspectj.weaver -->
  <dependency>
   <groupId>org.aspectj</groupId>
   <artifactId>com.springsource.org.aspectj.weaver</artifactId>
   <version>1.6.4.RELEASE</version>
  </dependency>
 <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-aop</artifactId>
  <version>5.0.10.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-aspects</artifactId>
  <version>5.1.0.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-beans</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-core</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-expression</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jcl</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-tx</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <!--導入jar包
 2.springmvc的jar包：2個
 spring-web-5.0.1.RELEASE.jar
 spring-webmvc-5.0.1.RELEASE.jar
 3.MyBatis的jar包：13個
 mybatis-3.4.2.jar
 依賴jar包12個
 4.MyBatis和Spring整合的jar包：1個
 mybatis-spring-1.3.1.jar
 -->
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-web</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>5.0.1.RELEASE</version>
 </dependency>
 <dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>3.4.2</version>
 </dependency>
 <dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis-spring</artifactId>
  <version>1.3.1</version>
 </dependency>
 <!--導入jar包
5.數據庫驅動jar包：1個
mysql-connector-java-5.1.7-bin.jar
6.數據源druid的jar包：1個
druid-1.1.5.jar
7.JSTL的jar包：2個
jstl-1.1.2 .jar
standard-1.1.2.jar
-->
 <dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.48</version>
 </dependency>
 <dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.1.5</version>
 </dependency>
 <dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>jstl</artifactId>
  <version>1.1.2</version>
 </dependency>
 <dependency>
  <groupId>taglibs</groupId>
  <artifactId>standard</artifactId>
  <version>1.1.2</version>
 </dependency> 
<!--導入Tomcat的jar包-->
 <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-servlet-api -->
 <dependency>
  <groupId>org.apache.tomcat</groupId>
  <artifactId>tomcat-servlet-api</artifactId>
  <version>9.0.21</version>
 </dependency> 
 </dependencies> 
 <build>
 <finalName>hrm01</finalName>
 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
  <plugins>
  <plugin>
   <artifactId>maven-clean-plugin</artifactId>
   <version>3.1.0</version>
  </plugin>
  <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
  <plugin>
   <artifactId>maven-resources-plugin</artifactId>
   <version>3.0.2</version>
  </plugin>
  <plugin>
   <artifactId>maven-compiler-plugin</artifactId>
   <version>3.8.0</version>
  </plugin>
  <plugin>
   <artifactId>maven-surefire-plugin</artifactId>
   <version>2.22.1</version>
  </plugin>
  <plugin>
   <artifactId>maven-war-plugin</artifactId>
   <version>3.2.2</version>
  </plugin>
  <plugin>
   <artifactId>maven-install-plugin</artifactId>
   <version>2.5.2</version>
  </plugin>
  <plugin>
   <artifactId>maven-deploy-plugin</artifactId>
   <version>2.8.2</version>
  </plugin>
  </plugins>
 </pluginManagement> 
 </build>
</project>

3.控制臺無報錯且網頁報錯404 找不到，或者500如下錯誤。

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘userHandler’: Unsatisfied dependency expressed through field ‘userService’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘userServiceImpl’: Unsatisfied dependency expressed through field ‘userDao’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘IUserDao’ defined in file [D:\Tomcat\apache-tomcat-9.0.27\webapps\hrm01_war\WEB-INF\classes\com\hrm\user\dao\IUserDao.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Wrong namespace. Expected ‘com.hrm.user.dao.IUserDao’ but found ‘com.hrm.user.dao.UserDao’.

二、解決方案

1.在pom文件中的build標簽下配置該屬性即可解決這個問題，但是要註意src前面不要加 / 。

一定不要寫為：（/src/main/java）。

這樣在編譯目錄下xml文件也被編譯。

2.加入該配置後編譯目錄下有瞭映射配置文件，見上圖IUserDao.xml。

控制臺可以正常顯示數據。

以上為個人經驗，希望能給大傢一個參考，也希望大傢多多支持WalkonNet。如有錯誤或未考慮完全的地方，望不吝賜教。

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