springmvc用配置类替换xml配置

码里法2024-09-10 6:08

ssm基础项目整合

前言

其实这中间用配置类，发现问题还挺多的，所以记录一下，尤其是针对shiro的配置。

xml配置

mybatis.xml

xml 复制代码 
<?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"
         id="WebApp_ID" version="3.0">
    <display-name>Archetype Created Web Application</display-name>
    <!--配置前端控制器-->
    <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>

    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

spingmvc.xml

xml 复制代码 
<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <bean id="dataSource"
          class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/ssm?serverTimeZone=Asia/Shanghai"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>

    <!-- SqlSessionFactory配置 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--    扫描mapper.xml，实现mapper接口的方法-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="zxy.study.ssm.mapper"/>
    </bean>

    <!-- 事务管理器配置 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 启用注解事务管理 -->
    <tx:annotation-driven transaction-manager="txManager"/>

    <context:component-scan base-package="zxy.study.ssm"/>

    <!-- 视图解析器对象 -->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--保证既能访问到静态文件js,也能正常访问接口-->
    <mvc:annotation-driven/>

    <!--保证jsp中的src能正确加载到js静态文件-->
    <mvc:resources mapping="/js/**" location="/js/"/>
    <mvc:resources mapping="/css/**" location="/css/"/>
</beans>

web.xml

xml 复制代码 
<?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"
         id="WebApp_ID" version="3.0">
    <display-name>Archetype Created Web Application</display-name>
    <!--配置前端控制器-->
    <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>

    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

配置类

java 复制代码 
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import java.util.List;
import java.util.Properties;

@Configuration
//扫描组件
@ComponentScan({"qlq.exam.makeup.ssm"})
@EnableAspectJAutoProxy
//开启mvc注解驱动
@EnableWebMvc
public class SpringMvcConfig implements WebMvcConfigurer {
    //默认的servlet处理静态资源
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(new MappingJackson2HttpMessageConverter());
    }

    //配置异常处理器
    @Override
    public void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {
        SimpleMappingExceptionResolver simpleMappingExceptionResolver = new SimpleMappingExceptionResolver();
        Properties prop = new Properties();
        prop.setProperty("java.lang.ArithmeticException", "error");
        simpleMappingExceptionResolver.setExceptionMappings(prop);
        simpleMappingExceptionResolver.setExceptionAttribute("ex");
        resolvers.add(simpleMappingExceptionResolver);
    }

    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/pages/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
}

配置类

jdbc配置类

java 复制代码 
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;

import java.util.HashMap;
import java.util.Map;

public class JdbcConfig {
    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String username;
    @Value("${jdbc.password}")
    private String password;

    //配置数据源
    @Bean
    public DruidDataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(driver);
        dataSource.setUrl(url);
        dataSource.setUsername(username);
        dataSource.setPassword(password);
        return dataSource;
    }

    //开启事务管理注解驱动
    @Bean
    public PlatformTransactionManager transactionManager(DruidDataSource dataSource) {
        DataSourceTransactionManager dst = new DataSourceTransactionManager(dataSource);
        return dst;
    }

    //加上配置，否则shiro里注入service无法正常使用
    @Bean
    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
        return new PropertySourcesPlaceholderConfigurer();
    }
}

mybatis配置

java 复制代码 
import com.alibaba.druid.pool.DruidDataSource;
import com.github.pagehelper.PageInterceptor;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;

import java.io.IOException;
import java.util.Properties;

public class MybatisConfig {

    @Bean
    public PageInterceptor sqlSessionFactoryBean() {
        // 配置PageHelper分页插件
        PageInterceptor pageInterceptor = new PageInterceptor();
        Properties properties = new Properties();
        properties.setProperty("helperDialect", "mysql");
        properties.setProperty("reasonable", "true");
        properties.setProperty("supportMethodsArguments", "true");
        pageInterceptor.setProperties(properties);
        return pageInterceptor;
    }

    @Bean(name = "sqlSessionFactory")
    public SqlSessionFactoryBean sqlSessionFactoryBean(DruidDataSource dataSource, PageInterceptor pageInterceptor) {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setTypeAliasesPackage("qlq.exam.makeup.ssm.entity");
        // 添加分页插件
        sqlSessionFactoryBean.setPlugins(pageInterceptor);
        return sqlSessionFactoryBean;
    }

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
        mapperScannerConfigurer.setBasePackage("qlq.exam.makeup.ssm.mapper");
        return mapperScannerConfigurer;
    }
}

SpringConfig配置

java 复制代码 
import org.springframework.context.annotation.*;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
//扫描除控制层组件
@ComponentScan(value = "qlq.exam.makeup.ssm", excludeFilters = {
        @ComponentScan.Filter(type = FilterType.ANNOTATION, value = {Controller.class})
})
//开启事务管理
@EnableTransactionManagement
//导入jdbc配置文件
@PropertySource("classpath:jdbc.properties")
//导入配置类
@Import({JdbcConfig.class,MybatisConfig.class})
public class SpringConfig {

}

SpringMvcConfig配置

java 复制代码 
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import java.util.List;
import java.util.Properties;

@Configuration
//扫描组件
@ComponentScan({"qlq.exam.makeup.ssm"})
@EnableAspectJAutoProxy
//开启mvc注解驱动
@EnableWebMvc
public class SpringMvcConfig implements WebMvcConfigurer {
    //默认的servlet处理静态资源
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(new MappingJackson2HttpMessageConverter());
    }

    //配置异常处理器
    @Override
    public void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {
        SimpleMappingExceptionResolver simpleMappingExceptionResolver = new SimpleMappingExceptionResolver();
        Properties prop = new Properties();
        prop.setProperty("java.lang.ArithmeticException", "error");
        simpleMappingExceptionResolver.setExceptionMappings(prop);
        simpleMappingExceptionResolver.setExceptionAttribute("ex");
        resolvers.add(simpleMappingExceptionResolver);
    }

    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/pages/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
}

shiro配置

java 复制代码 
import com.alibaba.druid.util.StringUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.ObjectUtils;
import qlq.exam.makeup.ssm.entity.Permission;
import qlq.exam.makeup.ssm.entity.User;
import qlq.exam.makeup.ssm.service.PermissionService;
import qlq.exam.makeup.ssm.service.UserService;

import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class UserRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;

    @Autowired
    private PermissionService permissionService;

    @Override//授权
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        User user = (User) principalCollection.getPrimaryPrincipal();
        Permission permission = permissionService.getPermByUserId(user.getId());
        String perm = permission.getPerm();
        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        if (!StringUtils.isEmpty(perm)){
            HashSet<String> roles = new HashSet<>();
            roles.add("admin");
            authorizationInfo.setRoles(roles);
            Set<String> set = new HashSet<>(Arrays.asList(perm.split(",")));
            authorizationInfo.setStringPermissions(set);
        }

        return authorizationInfo;//判断用户是否有执行某个操作的权限
    }

    @Override//认证
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        String principal = (String) token.getPrincipal();
        User user = userService.getUserByUserName(principal);
        //登录信息和数据库是否匹配
        if (!ObjectUtils.isEmpty(user)) {
            return new SimpleAuthenticationInfo(user, user.getPassword(),
                    ByteSource.Util.bytes(user.getSalt()),
                    getName());
        }
        return null;
    }
}
java 复制代码 
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.LifecycleBeanPostProcessor;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    @Bean("shiroFilterFactoryBean")
    public ShiroFilterFactoryBean getFilterFactoryBean(DefaultWebSecurityManager securityManager) {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        shiroFilterFactoryBean.setSecurityManager(securityManager);
        Map<String, String> filterMap = new LinkedHashMap<>();//创建一个filterMap来定义URL模式及其对应的安全设置。
        filterMap.put("/", "anon");//URL对所有人开放（不需要身份验证）。
        filterMap.put("/login", "anon");//URL对所有人开放（不需要身份验证）。
        filterMap.put("/**/*.js", "anon");
        filterMap.put("/**/*.jsp", "anon");
        filterMap.put("/**/*.css", "anon");
        filterMap.put("/**/*.html", "anon");
        filterMap.put("/**/*.png", "anon");
        //所有其他URL（/**）需要进行身份验证（authc），放在最下边，否则上边的放开的路径会被拦截。
        filterMap.put("/**", "authc");
//        shiroFilterFactoryBean.setLoginUrl("/pages/login.jsp");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
        return shiroFilterFactoryBean;
    }

    @Bean("securityManager")
    public DefaultWebSecurityManager getSecurityManager(UserRealm userRealm) {
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
        defaultWebSecurityManager.setRealm(userRealm);
        return defaultWebSecurityManager;
    }

    @Bean
    public UserRealm userRealm() {
        UserRealm userRealm = new UserRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        //设置加密算法为md5
        credentialsMatcher.setHashAlgorithmName("MD5");
        //设置散列次数,用于配置密码匹配器的安全设置，以确保密码的安全性和正确性
        credentialsMatcher.setHashIterations(1024);
        userRealm.setCredentialsMatcher(credentialsMatcher);
        return userRealm;
    }

    @Bean("lifecycleBeanPostProcessor")
    public LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
        return new LifecycleBeanPostProcessor();
    }

    @Bean
    public DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
        advisorAutoProxyCreator.setProxyTargetClass(true);
        return advisorAutoProxyCreator;
    }

    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(SecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
        advisor.setSecurityManager(securityManager);
        return advisor;
    }
}

WebInit

类代替了web.xml配置文件

java 复制代码 
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.filter.DelegatingFilterProxy;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import javax.servlet.*;
import java.util.EnumSet;

/*
 * 此配置类代替了web.xml配置文件
 *
 * */
public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {

    //设置一个配置类代替Spring的配置文件
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{SpringConfig.class};
    }

    //设置一个配置类代替SpringMvc的配置文件
    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{SpringMvcConfig.class};
    }

    //设置SpringMVC的前端控制器Dispatcherservlet的url-pattern
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
    //设置当前的过滤器

    @Override
    protected Filter[] getServletFilters() {
        //创建编码过滤器
        CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter("UTF-8", true);
        //创建处理请求方式的过滤器
        HiddenHttpMethodFilter hiddenHttpMethodFilter = new HiddenHttpMethodFilter();

        return new Filter[]{characterEncodingFilter, hiddenHttpMethodFilter};
    }

    //参考地址https://houbb.github.io/2016/08/11/shiro-21-intergrations-springmvc,不加这个配置shiro不能正常拦截使用
    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        super.onStartup(servletContext);
        FilterRegistration.Dynamic shiroFilter = servletContext.addFilter("shiroFilterFactoryBean", DelegatingFilterProxy.class);
        shiroFilter.setInitParameter("targetFilterLifecycle", "true");
        shiroFilter.addMappingForUrlPatterns(EnumSet.allOf(DispatcherType.class), false, "/*");
    }
}

里边最费劲的就是shiro的配置，jdbc和webinit中的两处一定要配置，还有就是拦截路径的前后关系，否则都会出现问题。
springmvc+jsp+shiro和springmvc+thymeleaf+shiro完整基础项目

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