SSM项目实战-SSM整合

IDEA整合SSM遇到的问题及解决办法。

1.创建maven项目,在resources文件夹下放配置文件。

2.pom.xml，导入项目需要的包。

<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>4.0.0modelVersion>
    <groupId>com.fggroupId>
    <artifactId>com.fg.hospitalartifactId>
    <version>1.0-SNAPSHOTversion>

    <properties>
        
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        
        <maven.compiler.encoding>UTF-8maven.compiler.encoding>
    properties>


    <packaging>warpackaging>
        <dependencies>
            <dependency>
                <groupId>junitgroupId>
                <artifactId>junitartifactId>
                <version>4.8.1version>
                <scope>testscope>
            dependency>
            
            <dependency>
                <groupId>org.mybatisgroupId>
                <artifactId>mybatisartifactId>
                <version>3.4.4version>
            dependency>
            
            <dependency>
                <groupId>mysqlgroupId>
                <artifactId>mysql-connector-javaartifactId>
                <version>8.0.21version>
            dependency>

            <dependency>
                <groupId>log4jgroupId>
                <artifactId>log4jartifactId>
                <version>1.2.17version>
            dependency>
            
            <dependency>
                <groupId>com.github.pagehelpergroupId>
                <artifactId>pagehelperartifactId>
                <version>5.1.6version>
            dependency>

            
            <dependency>
                <groupId>c3p0groupId>
                <artifactId>c3p0artifactId>
                <version>0.9.1.2version>
            dependency>
            
            <dependency>
                <groupId>org.mybatisgroupId>
                <artifactId>mybatis-springartifactId>
                <version>1.3.1version>
            dependency>

            <dependency>
                <groupId>org.springframeworkgroupId>
                <artifactId>spring-jdbcartifactId>
                <version>4.3.12.RELEASEversion>
            dependency>
            
            <dependency>
                <groupId>org.springframeworkgroupId>
                <artifactId>spring-contextartifactId>
                <version>4.3.12.RELEASEversion>
            dependency>
            <dependency>
                <groupId>org.springframeworkgroupId>
                <artifactId>spring-txartifactId>
                <version>4.3.12.RELEASEversion>
            dependency>

            <dependency>
                <groupId>org.springframeworkgroupId>
                <artifactId>spring-aopartifactId>
                <version>4.3.12.RELEASEversion>
            dependency>
            
            <dependency>
                <groupId>org.springframeworkgroupId>
                <artifactId>spring-webmvcartifactId>
                <version>4.3.12.RELEASEversion>
            dependency>
            <dependency>
                <groupId>jstlgroupId>
                <artifactId>jstlartifactId>
                <version>1.2version>
            dependency>

            <dependency>
                <groupId>com.fasterxml.jackson.coregroupId>
                <artifactId>jackson-databindartifactId>
                <version>2.9.2version>
            dependency>

        dependencies>


project>

3.spring配置文件：spring-config.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <context:component-scan base-package=" com.fg" use-default-filters="false">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>

    <context:property-placeholder location="classpath:db.properties"/>

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${driver}"/>
        <property name="jdbcUrl" value="${url}"/>
        <property name="user" value="${user}"/>
        <property name="password" value="${password}"/>
    bean>
    
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    bean>
    
    <tx:annotation-driven transaction-manager="transactionManager"/>


    
    <bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml" />
        <property name="typeAliasesPackage" value="com.fg.pojo"/>
    bean>
    
    
    <mybatis-spring:scan base-package="com.fg.dao"/>

beans>

4.springmvc配置文件：springmvc-config.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
    
    <mvc:default-servlet-handler />
    <mvc:annotation-driven/>
    <context:component-scan  base-package="com.fg.controller">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    bean>

beans>

5.mybaties配置文件：mybatis-config.xml

<configuration>

    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <setting name="lazyLoadingEnabled" value="true" />
        <setting name="aggressiveLazyLoading"  value="false" />
        <setting name="cacheEnabled" value="true"/>
        <setting name="logImpl" value="LOG4J" />
    settings>

    <plugins>
        
        <plugin interceptor="com.github.pagehelper.PageInterceptor">
            
            <property name="reasonable" value="true"/>
            <property name="supportMethodsArguments" value="true"/>
            <property name="params" value="pageNum=pageNum;pageSize=pageSize;"/>
        plugin>
    plugins>

configuration>

6.数据库配置文件：db.properties

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=GMT%2B8
user=root
password=*******

7.日志整合配置文件：log4j.xml

log4j.rootLogger=INFO, stdout, R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Pattern to output the caller's file name and line number.
#log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
# Print the date in ISO 8601 format
log4j.appender.stdout.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
# Print only messages of level WARN or above in the package com.foo.
log4j.logger.com.fg=INFO

遇到的问题

IDEA使用@Autowired注解提示：Field injection is not recommended
解决办法：将@Autowired注解换成@Resource注解
以及userDao报错：Could not autowire. No beans of ‘UserDao’ type found.
解决办法一：将@Autowired注解换成@Resource注解
解决办法二：[转载@Autowired报错解决办法]
(https://blog.csdn.net/qq_44925249/article/details/89357571)

静态资源无法访问，在springmvc-config.xml中添加：

<mvc:default-servlet-handler/>

然后在扫描包时禁用默认规则！！！！！！！切记
use-default-filters=“false”

<context:component-scan  base-package="com.fg.controller" use-default-filters="false">