maven 整合spring+springmvc+mybatis+mysql

maven 環境變量配置

Maven下載

下載地址：http://maven.apache.org/download.cgi

 

 

 

apache-maven路徑（版本是會不斷更新的）

 

系統環境變量配置HOME_MAVEN

電腦——>屬性——>高級系統設置——>環境變量

1新建環境變量（用戶變量）HOME_MAVEN，變量值是apache-maven路徑。

 

 2.編輯系統變量里的path，把apache-maven里的bin路徑添加到變量值的后面，我的是 ;F:\mvn\apache-maven-3.5.4\bin; 。(注意前后要有；號，也可以是%MAVEN_HOME%\bin，如何用這個報錯可以試試前面的絕對路徑。 )

 

 

 3.配置本地maven倉庫路徑

找到文件settings.xml ，    我的在F:\mvn\apache-maven-3.5.4\conf 文件夾下

默認的本地庫的路徑是C盤的${user}/.m2/repository/

配置自定義倉庫地址

<localRepository>F:/repository</localRepository>

 

maven配置阿里鏡像。

<mirror>
<id>alimaven</id>
<name>aliyun maven</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<mirrorOf>central</mirrorOf>
</mirror>

 

 

 

 4.eclipse配置maven。

Windows->preferences,配置maven的installations，點擊add，點擊directory，installation home是maven安裝的路徑，installation name自動帶出。

 

配置maven user settins。點擊Window的屬性。

 

 下面這個配置，解決更新項目的時候，報Dmaven.multiModuleProjectDirectory某某set的問題。

在default vm處配置改為-Dmaven.multiModuleProjectDirectory=$MAVEN_HOME。（等號前面固定，等號后邊是Maven配置的變量名稱）。

 

 

*新建maven工程。

 

 

 建好項目后會報紅星錯誤，bulid path jdk版本換成默認的，或者和下面jdk相同版本，然后按照下面的配置，然后clean一下。

 點擊project里的屬性。

上面錯誤解決方式。

1.web.xml里的

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">的web-app的版本號改為3.0.

2.找到org.eclipse.wst.common.project.facet.core.xml文件，修改java為1.8，jst.web為3.0.

如果沒有顯示.settings文件夾。按照下面操作。

1.選中工程，選擇Filters

 2.取消.resources勾選，點擊OK.顯示.settings文件夾, .classpath 文件, .project文件, .gitignore文件

 

 新建src/main/resources.（注意一定要是新建source Folder類型的）

 SSM整合。

 一先整體看下項目的目錄結構

未展開的目錄結構。

 

 

 展開后的目錄結構。

 

 

 

 

 

 

二、maven需要引入的jar包，pom.xml

 

 

三、建立JDBC屬性配置文件，jdbc.properties

#數據庫驅動

driver=com.mysql.jdbc.Driver

#數據庫連接

url=jdbc:mysql://localhost:3306/konglx?useUnicode=true&characterEncoding=UTF-8

#用戶名

username=root

#用戶密碼

password=root

#定義初始連接數

initialSize=0

#定義最大連接數

maxActive=20

#定義最大空閑

maxIdle=20

#定義最小空閑

minIdle=1

#定義最長等待時間

maxWait=60000

四、log4j日志配置文件 ， log4j.properties

# This is the configuring for logging displayed in the Application Server
log4j.rootCategory=INFO, stdout,common-default,common-warn,common-error

# project loggers
#log4j.logger.com.konglx.dao=INFO,project-dao
log4j.logger.com.konglx.service=INFO,project-service
log4j.logger.com.konglx.controller=INFO,project-web

# common appenders
#stdout configure
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#common-default file appender
log4j.appender.common-default=org.apache.log4j.DailyRollingFileAppender
log4j.appender.common-default.file=${user.home}/logs/common-default.log
log4j.appender.common-default.layout=org.apache.log4j.PatternLayout
log4j.appender.common-default.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#common-warn file appender
log4j.appender.common-warn=org.apache.log4j.DailyRollingFileAppender
log4j.appender.common-warn.file=${user.home}/logs/common-warn.log
log4j.appender.common-warn.layout=org.apache.log4j.PatternLayout
log4j.appender.common-warn.filter.ID=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.common-warn.filter.ID.levelMin=WARN
log4j.appender.common-warn.filter.ID.levelMax=WARN
log4j.appender.common-warn.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#common-error file appender
log4j.appender.common-error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.common-error.file=${user.home}/logs/common-error.log
log4j.appender.common-error.layout=org.apache.log4j.PatternLayout
log4j.appender.common-error.threshold=ERROR
log4j.appender.common-error.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#common-dao file appender
log4j.appender.common-dao=org.apache.log4j.DailyRollingFileAppender
log4j.appender.common-dao.file=${user.home}/logs/common-dao.log
log4j.appender.common-dao.layout=org.apache.log4j.PatternLayout
log4j.appender.common-dao.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#common-web file appender
log4j.appender.common-web=org.apache.log4j.DailyRollingFileAppender
log4j.appender.common-web.file=${user.home}/logs/common-web.log
log4j.appender.common-web.layout=org.apache.log4j.PatternLayout
log4j.appender.common-web.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#common-pageNotFound file appender
log4j.appender.common-pageNotFound=org.apache.log4j.DailyRollingFileAppender
log4j.appender.common-pageNotFound.file=${user.home}/logs/common-pageNotFound.log
log4j.appender.common-pageNotFound.layout=org.apache.log4j.PatternLayout
log4j.appender.common-pageNotFound.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

# project appenders

#project-dao file appender
#log4j.appender.project-dao=org.apache.log4j.DailyRollingFileAppender
#log4j.appender.project-dao.file=${user.home}/logs/project-dao.log
#log4j.appender.project-dao.layout=org.apache.log4j.PatternLayout
#log4j.appender.project-dao.threshold=INFO
#log4j.appender.project-dao.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#project-web file appender
log4j.appender.project-web=org.apache.log4j.DailyRollingFileAppender
log4j.appender.project-web.file=${user.home}/logs/project-web.log
log4j.appender.project-web.layout=org.apache.log4j.PatternLayout
log4j.appender.project-web.threshold=INFO
log4j.appender.project-web.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

#project-service file appender
log4j.appender.project-service=org.apache.log4j.DailyRollingFileAppender
log4j.appender.project-service.file=${user.home}/logs/project-service.log
log4j.appender.project-service.layout=org.apache.log4j.PatternLayout
log4j.appender.project-service.threshold=INFO
log4j.appender.project-service.layout.conversionPattern= %d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{entranceMethod} - %X{req.requestURIWithQueryString}] %-5p %c - %m%n

# open source framework loggers

#spring
log4j.logger.org.springframework=INFO
log4j.logger.org.springframework.jdbc=DEBUG,common-dao

# debug log for ibatis2.3
#log4j.logger.java.sql.Connection=DEBUG,common-dao
#log4j.logger.java.sql.Statement=INFO,common-dao
#log4j.logger.java.sql.PreparedStatement=INFO,common-dao
#log4j.logger.java.sql.ResultSet=INFO,common-dao

# debug log for mybatis
log4j.logger.java.sql.Connection=DEBUG,common-dao
log4j.logger.java.sql.Statement=DEBUG,common-dao
log4j.logger.java.sql.PreparedStatement=DEBUG,common-dao
log4j.logger.java.sql.ResultSet=DEBUG,common-dao
log4j.logger.org.mybatis.spring=DEBUG,common-dao
log4j.logger.com.springframework=DEBUG

 

# hibernate: Changing the log level to DEBUG will display SQL Hibernate generated
#log4j.logger.org.hibernate=INFO,common-dao
#log4j.logger.org.hibernate.SQL=ERROR
#log4j.logger.org.hibernate.cache=ERROR
#log4j.logger.net.sf.ehcache=ERROR

#springmvc pageNotFound
log4j.logger.org.springframework.web.servlet.PageNotFound=INFO,common-pageNotFound

#HibernateValidator
log4j.logger.org.apache.commons.validator.ValidatorResources=INFO

#log4jdbc,
log4j.logger.jdbc.sqlonly=ON
log4j.logger.jdbc.sqltiming=INFO,common-dao
log4j.logger.jdbc.audit=ON
log4j.logger.jdbc.resultset=ON
log4j.logger.jdbc.connection=ON

#====add==
### direct messages to file hibernate.log ###
#log4j.appender.file=org.apache.log4j.FileAppender
#log4j.appender.file.File=hibernate.log
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change 'info' to 'debug' ###

log4j.rootLogger = debug , stdout

#log4j.logger.org.hibernate=info
#log4j.logger.org.hibernate=debug

### log HQL query parser activity
#log4j.logger.org.hibernate.hql.ast.AST=debug

### log just the SQL
#log4j.logger.org.hibernate.SQL=debug

### log JDBC bind parameters ###
#log4j.logger.org.hibernate.type=trace
#log4j.logger.org.hibernate.type=debug

### log schema export/update ###
#log4j.logger.org.hibernate.tool.hbm2ddl=debug

### log HQL parse trees
#log4j.logger.org.hibernate.hql=debug

### log cache activity ###
#log4j.logger.org.hibernate.cache=debug

### log transaction activity
#log4j.logger.org.hibernate.transaction=debug

### log JDBC resource acquisition
#log4j.logger.org.hibernate.jdbc=debug

### enable the following line if you want to track down connection ###
### leakages when using DriverManagerConnectionProvider ###
#log4j.logger.org.hibernate.connection.DriverManagerConnectionProvider=trace

五、建立spring-mybatis.xml配置文件

這個文件就是用來完成spring和mybatis的整合的，包含spring和mybatis的配置，包括自動掃描，自動注入，配置數據庫；

 六、整合springMVC，spring-mvc.xml

　　上面已經完成了2大框架的整合，SpringMVC的配置文件單獨放，然后在web.xml中配置整合，主要是自動掃描控制器，視圖模式，注解的啟動這三個

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
                            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  
                            http://www.springframework.org/schema/context  
                            http://www.springframework.org/schema/context/spring-context-4.0.xsd  
                            http://www.springframework.org/schema/mvc  
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!--避免IE執行AJAX時，返回JSON出現下載文件 -->
    <bean id="mappingJacksonHttpMessageConverter"
        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <!-- 啟動SpringMVC的注解功能，完成請求和注解POJO的映射 -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <!-- JSON轉換器 -->
                <ref bean="mappingJacksonHttpMessageConverter" />    
            </list>
        </property>
    </bean>
    <!-- 對靜態資源的訪問 -->
    <!-- <mvc:resources mapping="/js/**" location="/js/" /> 
        <mvc:resources mapping="/css/**" location="/css/" /> -->
    <!-- 自動掃描該包，使SpringMVC認為包下用了@controller注解的類是控制器 -->
    <context:component-scan base-package="com.konglx.controller" />
    <!-- 添加注解驅動 -->
    <mvc:annotation-driven enable-matrix-variables="true" />
    <!-- 允許對靜態資源文件的訪問 -->
    <mvc:default-servlet-handler />
    <!-- 定義跳轉的文件的前后綴 ，視圖模式配置 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 這里的配置我的理解是自動給后面action的方法return的字符串加上前綴和后綴，變成一個 可用的url地址 -->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
    <!-- 配置文件上傳，如果沒有使用文件上傳可以不用配置，當然如果不配，那么配置文件中也不必引入上傳組件包 -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默認編碼 -->
        <property name="defaultEncoding" value="UTF-8" />
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
        <!-- 內存中的最大值 -->
        <property name="maxInMemorySize" value="40960" />
    </bean>
</beans>

 

 七、配置web.xml

           這里面是對spring-mybatis.xml的引入以及配置的spring-mvc的Servlet就是為了完成SSM整合，之前2框架整合不需要在此處進行任何配置。

 

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
    <display-name>Archetype Created Web Application</display-name>
    
    <!-- Spring和mybatis的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-*.xml</param-value>
    </context-param>
    
    <!-- 編碼過濾器 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <!-- Spring監聽器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!-- 防止Spring內存溢出監聽器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
    
    <!-- Spring MVC servlet -->
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <!-- 此處可以可以配置成*.do，對應struts的后綴習慣 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <welcome-file-list>
        <welcome-file>/index.html</welcome-file>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

 

 到目前為止，所有的整合已經完成，配置文件也搞好了，接下來就利用mybatis來自動生成一些java代碼：

首先，我們建立數據庫：下面是建庫建表的語句

CREATE DATABASE `konglx` 

DROP TABLE IF EXISTS `user_t`;

CREATE TABLE `user_t` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(40) NOT NULL,
  `password` varchar(255) NOT NULL,
  `age` int(4) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

INSERT INTO `user_t` VALUES (1,'project_star-konglx','123',24);

逆向工程的2種方式。

1.利用MyBatis Generator自動創建代碼

在f盤上建立一個文件夾（本文用到的文件夾不包含中文字符），然后在里面建個src文件夾，里面的東西如下圖：

 

 

 

generatorConfig.xml需要手動配置，下面附上配置的內容信息：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <!-- 數據庫驅動 -->
    <classPathEntry location="mysql-connector-java-5.1.45-bin.jar" />
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true" />
            <!-- 是否去除自動生成的注釋 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--數據庫鏈接URL，用戶名、密碼 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/konglx" userId="root" password="root">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
        <!-- 生成模型的包名和位置 -->
        <javaModelGenerator targetPackage="com.konglx.bean"
            targetProject="src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- 生成映射文件的包名和位置 -->
        <sqlMapGenerator targetPackage="com.konglx.mapping"
            targetProject="src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <!-- 生成DAO的包名和位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.konglx.dao" targetProject="src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>
        <!-- 要生成的表 tableName是數據庫中的表名或視圖名 domainObjectName是實體類名 -->
        <table tableName="user_t" domainObjectName="User"
            enableCountByExample="false" enableUpdateByExample="false"
            enableDeleteByExample="false" enableSelectByExample="false"
            selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

最后，打開cmd，進入該文件夾（也可以在這個文件夾中按住 shift + 右擊，選擇"在此處打開命令窗口"），復制粘貼以下代碼+回車

Java -jar mybatis-generator-core-1.3.6.jar -configfile generatorConfig.xml -overwrite

完成后，到該文件夾下打開src,如下

 

2.利用java自動創建代碼

利用java生成代碼，只要在generatorTemp.java文件運行main方法就可以了。run as ->java applicatoin.F5刷新整個項目，會在下面目錄生成目錄文件。

 

 

 generatorTemp.java文件和generator.xml文件的目錄。

 

 

 generatorTemp.java文件內容。

package generator;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;
import org.springframework.core.io.DefaultResourceLoader;

public class generatorTemp {

    public void generator() throws Exception {

        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        
        
     // 獲取文件分隔符
     		//String separator = File.separator;
     		
     		// 獲取工程路徑
     		//File projectPath = new DefaultResourceLoader().getResource("").getFile();
     		//while(!new File(projectPath.getPath()+separator+"src"+separator+"main").exists()){
     			//projectPath = projectPath.getParentFile();
     		//}
     		
     		
     		// 模板文件路徑  F:\workspace\project_star\src\main\java\generator\generator.xml
     		//String tplPath = StringUtils.replace(projectPath+"/src/main/java/com/thinkgem/jeesite/generate/template", "/", separator);
        //指定 逆向工程配置文件
        File configFile = new File("./src/main/java/generator/generator.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
                callback, warnings);
        myBatisGenerator.generate(null);

    }

    public static void main(String[] args) throws Exception {
        try {
            generatorTemp generatorSqlmap = new generatorTemp();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

generator.xml文件內容。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <context id="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自動生成的注釋 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--數據庫連接的信息：驅動類、連接地址、用戶名、密碼 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/konglx" userId="root"
                        password="root">
        </jdbcConnection>
        <!-- 默認false，把JDBC DECIMAL 和 NUMERIC 類型解析為 Integer，為 true時把JDBC DECIMAL 和
            NUMERIC 類型解析為java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO類的位置 -->
        <javaModelGenerator targetPackage="com.konglx.bean"
                            targetProject="./src">
            <!-- enableSubPackages:是否讓schema作為包的后綴 -->
            <property name="enableSubPackages" value="false" />
            <!-- 從數據庫返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="com.konglx.mapper"
                         targetProject="./src">
            <!-- enableSubPackages:是否讓schema作為包的后綴 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.konglx.mapper"
                             targetProject="./src">
            <!-- enableSubPackages:是否讓schema作為包的后綴 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定數據庫表 -->
        <table schema="" tableName="user_t"></table>


    </context>
</generatorConfiguration>

 

 service接口

package com.konglx.service;

import com.konglx.bean.User;

public interface UserService {
    
     public User getUserById(int userId);
    
}

serviceImpl實現類

package com.konglx.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.konglx.bean.User;
import com.konglx.dao.UserMapper;
import com.konglx.service.UserService;

@Service("userService")
public class UserServiceImpl implements UserService{
    
    @Autowired
    private UserMapper userDao;
    
    @Override
    public User getUserById(int userId) {

        return this.userDao.selectByPrimaryKey(userId);

    }

}

手動創建jsp頁面 

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>project_star</title>
</head>
<body>
    <h1>${user.userName}</h1>
</body>
</html>

 

手動創建controller

package com.konglx.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.konglx.bean.User;
import com.konglx.service.impl.UserServiceImpl;

@Controller
@RequestMapping(value = "/user")
public class UserController {
    
    @Autowired
    private UserServiceImpl userServiceImpl;
    
    @RequestMapping(value = "/test")
    public String Index(HttpServletRequest request, Model model){
        int userId = Integer.parseInt(request.getParameter("id"));
        User user = userServiceImpl.getUserById(userId);
        model.addAttribute("user",user);
         return "User";
    }

}

 至此，所有的代碼已經完成了

最后，項目右鍵-maven-update project。然后maven-maven install。然后部署項目到Tomcat。

啟動服務，訪問url。     http://localhost:8080/project_star/user/test?id=1

啟動成功，沒有報錯如下圖。