Java的SSM框架超详细整合入门（附带源码）

编程语言 2020-01-26 10:52:49 阅读次数: 0

首先，先了解一下SSM框架

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看本博客的需要提前分别掌握Spring，SpringMVC,MyBatis的应用，否则看起来会很乏力

按照博客的顺序一步一步走，完成SSM框架的搭建，为了防止有些初学者对于包的创建位置还有些模糊，博客最尾附带了整体项目的结构图

开始搭建

和数据库打交道是必要的事情，所以我们先创建好数据库，使用数据库工具，直接复制粘贴即可
数据库代码

create database ssmIDEA;
use ssmIDEA;

create table user(
	id int primary key auto_increment,
	name varchar(20),
	age int
);
select*from user;
-- 测试数据
insert into user(name,age)values("huang",20);
insert into user(name,age)values("lin",20);

我们需要有一个使用maven管理的web项目

那么我们按照步骤来：new一个新的Project
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选择Maven，选择创建Web项目，注意不要选错

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输入项目的GroupId，ArtifactId，点击next
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选择Maven配置文件，和本地仓库，默认也可以，点击下一步
构建太慢可以添加archetypeCatalog=internal，这里我不添加在这里插入图片描述

输入路径，点击FINISH，点击OK
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创建好了之后我们需要新建java，resources包
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创建所需要的包，如图所示
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开始代码

我们先搞定pom.xml文件（导入坐标并建立依赖）

<?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.ssm</groupId>
  <artifactId>SSM+</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>SSM+ 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>
    <spring.version>5.0.2.RELEASE</spring.version>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
    <shiro.version>1.2.3</shiro.version>
    <mysql.version>8.0.17</mysql.version>
    <mybatis.version>3.5.3</mybatis.version>
  </properties>

  <dependencies>
    <!-- spring -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>
    <!--MySql-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
   
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.5</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter</artifactId>
      <version>RELEASE</version>
      <scope>compile</scope>
    </dependency>

  </dependencies>

  <build>
    <finalName>SSM+</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>
  <modules>
    <module>ssm_domain</module>
    <module>ssm_dao</module>
    <module>ssm_service</module>
    <module>ssm_web</module>
  </modules>
</project>

接下来是实体类（cn.spring.domain.User.java）

package cn.spring.domain;

public class User {
    private Integer id;
    private String name;
    private Integer age;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

持久层接口（cn.spring.dao.UserDao.java）

package cn.spring.dao;

import cn.spring.domain.User;

import java.util.List;

public interface UserDao {
    //添加用户
    
    public void saveUser(User user);
    
    //查询所有用户
    
    public List<User> findAllUser();
}

业务层接口（cn.spring.service.UserService.java）

package cn.spring.service;

import cn.spring.domain.User;

import java.util.List;

public interface UserService {
    //添加用户

    public void saveUser(User user);

    //查询所有用户

    public List<User> findAllUser();
}

Spring框架配置文件（applicationContext.xml）

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx 
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop 
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">
       
    <!--配置spring创建容器要扫描的包-->
    <context:component-scan base-package="cn.spring">
    
        <!--不扫描Controller注解的类-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        
    </context:component-scan>
</beans>

测试一下Spring框架是否搭建成功

业务层接口实现类UserServiceImpl.java

package cn.spring.service.impl;

import cn.spring.domain.User;
import cn.spring.service.UserService;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("userService")
public class UserServiceImpl implements UserService {
    @Override
    public void saveUser(User user) {
        System.out.println("业务层添加方法被调用");
    }

    @Override
    public List<User> findAllUser() {
        System.out.println("业务层查询方法被调用");
        return null;
    }
}

测试类( cn.spring.test.SpringTest)

package cn.spring.test;

import cn.spring.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringTest {

    @Test
    public void run1(){
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService=(UserService)applicationContext.getBean("userService");
        userService.findAllUser();
    }
}

运行结果如图所示说明搭建成功

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搭建SpringMVC框架

web.xml 中配置核心控制器（DispatcherServlet）

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!--配置核心控制器（DispatcherServlet）-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!--中文乱码问题-->
  <filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

配置文件（springmvc.xml）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
 		http://www.springframework.org/schema/beans/spring-beans.xsd
 		http://www.springframework.org/schema/mvc
		http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/context
 		http://www.springframework.org/schema/context/spring-context.xsd">
    
    <!--创建扫描的包-->
    <context:component-scan base-package="cn.spring">
        <!--只扫描Controller-->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--配置视图解析器对象-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!--开启SpringMVC注解支持-->
    <mvc:annotation-driven/>
</beans>

控制器类(cn.spring.controller.UserController)

package cn.spring.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/user")
public class UserController {

    @RequestMapping("/findAll")
    public String findAll(){
        System.out.println("表现层查询方法被调用");
        return "all";
    }
}

webapp目录下需要的的jsp文件

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index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <a href="user/findAll">测试查询</a>
</body>
</html>

all.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>查询所有</h1>
</body>
</html>

测试：配置tocmat并运行

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运行结果

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说明SpringMVC框架搭建成功

整合(Spring+SpringMVC)

web.xml中添加下面的配置，实现整合


  <!--配置监听器实现启动服务创建容器->Spring+SpringMVC-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--配置文件路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

搭建 Mybatis框架

resources下的数据库文件jdbcConfig.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmidea?serverTimezone=UTC
jdbc.username=root
jdbc.password=010126

MyBatis配置文件SqlConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
    <properties resource="jdbcConfig.properties"></properties>
    <environments default="mysql">`在这里插入代码片`
        <environment id="mysql">
            <transactionManager type="jdbc"></transactionManager>
            <dataSource type="pooled">
                <property name="driver" value="${jdbc.driver}"/>
                <property name="url" value="${jdbc.url}"/>
                <property name="username" value="${jdbc.username}"/>
                <property name="password" value="${jdbc.password}"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
       <!-- <mapper class="cn.itcast.dao.AccountDao"></mapper>-->
        <!--使用package以后这个包中的所有类都可以映射到-->
        <package name="cn.spring.dao"/>
    </mappers>
</configuration>

测试

修改UserDao.java

package cn.spring.dao;

import cn.spring.domain.User;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface UserDao {
    //添加用户
    @Insert("insert into user(name,age)values(#{name},#{age})")
    public void saveUser(User user);

    //查询所有用户

    @Select("select *from user")
    public List<User> findAllUser();
}

测试类（cn.itcast.test.MybatisTest.java）

public class MybatisTest {

    @Test
    public void run() throws IOException {
        InputStream in= Resources.getResourceAsStream("SqlConfig.xml");
        SqlSessionFactory sqlSessionFactory=new SqlSessionFactoryBuilder().build(in);
        SqlSession sqlSession=sqlSessionFactory.openSession();
        UserDao userDao=(UserDao)sqlSession.getMapper(UserDao.class);
        List<User> list=userDao.findAllUser();
        for (User user:list){
            System.out.println("user = " + user);
        }
        sqlSession.close();
        in.close();
    }
}

运行结果如下，说明成功

在这里插入图片描述

整合(Spring+MyBatis)

修改applicationContext.xml文件

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">
    <!--配置spring创建容器要扫描的包-->
    <context:component-scan base-package="cn.spring">
        <!--不扫描Controller注解的类-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--Spring整合Mybatis-->
    <!--配置连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.cj.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm?serverTimezone=UTC"></property>
        <property name="user" value="root"></property>
        <property name="password" value="010126"></property>
    </bean>
    <!--SqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--配置接口所在包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.spring.dao"></property>
    </bean>

    <!--配置Spring框架的声明式事务管理-->
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>
    <!--AOP增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.spring.service.impl.*ServiceImpl.*(..))"/>
    </aop:config>
</beans>

修改UserServiceImpl.java

package cn.spring.service.impl;

import cn.spring.dao.UserDao;
import cn.spring.domain.User;
import cn.spring.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("userService")
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;
    @Override
    public void saveUser(User user) {
        System.out.println("业务层添加方法被调用");
        userDao.saveUser(user);
    }

    @Override
    public List<User> findAllUser() {
        System.out.println("业务层查询方法被调用");
        return userDao.findAllUser();
    }
}

修改UserController.java

package cn.spring.controller;

import cn.spring.domain.User;
import cn.spring.service.UserService;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;
    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层查询方法被调用");
        List<User> list=userService.findAllUser();
        model.addAttribute("list",list);
        return "all";
    }
    @RequestMapping("/save")
    public  void save(User user, HttpServletRequest request, HttpServletResponse response) throws IOException {
        userService.saveUser(user);
        response.sendRedirect(request.getContextPath()+"/user/findAll");
        return;
    }
}

修改index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <a href="user/findAll">测试查询</a>
    <h1>测试保存</h1>
    <form action="user/save" method="post">
        名称：<input type="text" name="name"/><br/>
        年龄：<input type="text" name="age"><br/>
        <input type="submit" value="保存"/>
    </form>
</body>
</html>

修改all.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>查询所有</h1>
    <c:forEach items="${list}" var="user">
        ${user.name}
    </c:forEach>
</body>
</html>

运行

在这里插入图片描述
在这里插入图片描述
在这里插入图片描述

成功了

在resources中添加log4j.properties文件

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

看一下完整的目录

在这里插入图片描述

（源码审核中，晚些上传…）

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