框架升级之springMvc+spring+mybatis 转 springBoot
项目说明:
1.前后端分离的web项目-后台管理系统
2.外置tomcat,保留web.xml
3.打包方式:war
4.yml配置
应用场景:
1.支持多数据源
2.文件上传
3.定时
4.异步
5.shiro 权限整合
6.log4j
二.案例
项目结构:
1.pom.xml
2.application.yml
#切换不同运行环境的配置
spring:
profiles:
active: local
---
#开发配置
spring:
profiles: local
# double mysql datasource
datasource:
# 数据源1
db1:
jdbc-url:
username:
password:
driver-class-name: com.mysql.cj.jdbc.Driver
# type: com.alibaba.druid.pool.DruidDataSource
type: org.apache.commons.dbcp2.BasicDataSource
dbcp2:
initialSize: 2
maxTotal: 4
minIdle: 2
maxWaitMillis: 5000
validationQuery: select 1
maxConnLifetimeMillis: 43200000
timeBetweenEvictionRunsMillis: 14400000
numTestsPerEvictionRun: 500
# 数据源2
#db2:
# session
session:
store-type: none
#停用jmx监控,tomcat多个项目使用相同数据源名时会部署失败;
jmx:
enabled: false
# mybatis backpage
mybatis:
typeAliasesPackage: demo.model
#mapperLocations: classpath:mapper/*.xml
---
#test environment
spring:
profiles: test
datasource:
# db1
db1:
jdbc-url:
username:
password:
driver-class-name: com.mysql.cj.jdbc.Driver
# type: com.alibaba.druid.pool.DruidDataSource
type: org.apache.commons.dbcp2.BasicDataSource
dbcp2:
initialSize: 2
maxTotal: 4
minIdle: 2
maxWaitMillis: 5000
validationQuery: select 1
maxConnLifetimeMillis: 43200000
timeBetweenEvictionRunsMillis: 14400000
numTestsPerEvictionRun: 500
# db2
#db2:
# session
session:
store-type: none
jmx:
enabled: false
# mybatis backpage
mybatis:
typeAliasesPackage: demo.model
#config-location:
3.web.xml
依旧在webapp->WEB-INF下
version="3.0">
4.应用主程序: SpringBootApplication
**
* 启动类
*/
// controller,service等扫描路径 : 默认扫描和启动类同个包下文件
@EnableScheduling // 启用spring定时
@EnableTransactionManagement//数据库事务
@EnableAsync //异步
@SpringBootApplication
public class SpringBootBackApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(SpringBootBackApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringBootBackApplication.class);
}
/**
* 去除multipartResolver 冲突,上传文件配置
*
* @return
*/
@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
multipartResolver.setDefaultEncoding("UTF-8");
// resolveLazily属性启用是为了推迟文件解析，以在在UploadAction中捕获文件大小异常
// multipartResolver.setResolveLazily(true);
multipartResolver.setMaxInMemorySize(5120);
// 上传文件大小 30M 30*1024*1024
multipartResolver.setMaxUploadSize(30 * 1024 * 1024);
return multipartResolver;
}
/**
* 文件上传配置
*
* @return
*/
// @Bean
// public MultipartConfigElement multipartConfigElement() {
// MultipartConfigFactory factory = new MultipartConfigFactory();
// // 单个文件最大
// factory.setMaxFileSize("30MB"); // KB,MB
// /// 设置总上传数据总大小
// factory.setMaxRequestSize("30MB");
// return factory.createMultipartConfig();
// }
/**
* redis
*
* @return
*/
// @Bean
// public static ConfigureRedisAction configureRedisAction() {
// return ConfigureRedisAction.NO_OP;
// }
}
5.config 配置类
5.1数据源注册
/*
* db1的数据源,事务,工厂等配置
*/
@Configuration
@MapperScan(basePackages = "hotkidclub.mapper", sqlSessionTemplateRef = "db1SqlSessionTemplate")
public class MasterDataSourceConfig {
@Bean
@ConfigurationProperties(prefix = "spring.datasource.db1")
@Primary
public DataSource db1DataSource() {
return DataSourceBuilder.create().build();
}
@Bean
@Primary
public SqlSessionFactory db1SqlSessionFactory(@Qualifier("db1DataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:hotkidclub/mapper/*.xml"));
return bean.getObject();
}
@Bean
@Primary
public DataSourceTransactionManager db1TransactionManager(@Qualifier("db1DataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean
@Primary
public SqlSessionTemplate db1SqlSessionTemplate(@Qualifier("db1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
5.2 Mvc 可根据具体应用场景配置
/**
* Mvc相关配置
*
* Interceptors：拦截器
*
* ArgumentResolvers: 参数绑定解析器
*
* ViewControllers：页面跳转
*
* ResourceHandlers：静态资源
*
* configureDefaultServletHandling：默认静态资源处理器
*
* configureViewResolvers：视图解析器
*
* configureContentNegotiation：配置内容裁决的一些参数
*
* addCorsMappings：跨域
*
* configureMessageConverters：信息转换器
*/
@Configuration
public class WebConfigurer implements WebMvcConfigurer {
@Autowired
private LoggedInInterceptor loggedInInterceptor;
@Autowired
private LoginUserInfoResolver loginUserInfoResolver;
/**
* 配置静态资源:html，js，css，等等
*
* @param registry
*/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
}
/**
* 注册拦截器:自定义的拦截器需要通过这里添加注册才能生效
*
*
* @param registry
*/
// @Override
// public void addInterceptors(InterceptorRegistry registry) {
// registry.addInterceptor(loggedInInterceptor).addPathPatterns("/**").excludePathPatterns("/login.ctrl");// 添加请求路径拦截,以及不包含的路径(不拦截)
// registry.addInterceptor(loggedInInterceptor);// 在注册时不指定拦截路径,通过拦截器中判断是否函数带有isLogin(自定义)的注解来拦截
// }
/**
* 注册:参数绑定解析器
*
* @param argumentResolvers
*/
@Override
public void addArgumentResolvers(List argumentResolvers) {
//argumentResolvers.add(loginUserInfoResolver);
}
}
6.shiro 相关
6.1 自定义realm
/**
* shiro 核心组件-realm : 处理用户资源权限,实现认证和授权
*/
public class ShiroRealm extends AuthorizingRealm {
@Autowired
RoleService roleService;
/**
* 认证器 :
*
* 本平台用户登入接口调用-subject.login() : 回调该函数
*
*
* @param authcToken 凭证信息:可存放用户账号密码
* @return 认证信息:包含当前请求登入的用户信息
* @throws AuthenticationException
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException {
Subject subject = SecurityUtils.getSubject();
// 1.获取认证的主体信息:账户密码
UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
// 2.可校验数据库存储的账号密码(本系统在登入接口的service层已处理)
// 3.创建简单认证信息对象可存放相关信息 : (object, object, 字符串);可传递自定义对象,字符内容;
// Session session = subject.getSession();
// session.setAttribute("user", token.getPrincipal());
SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(token.getPrincipal(), token.getCredentials(), getName());
return info;
}
/**
* 授权器 : 校验用户的角色和权限
*
* 本平台接口配置角色/权限的授权注解时 : 回调该函数
*
*
* @param principalCollection
* @return
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
String principal = (String) principalCollection.getPrimaryPrincipal();
SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
// 1.通过用户名去数据库查询该用户的角色和权限
Map verifyInfo = roleService.getAuthorizationInfo(principal);
Set rs = (Set) verifyInfo.get("roleNames");
Set ps = (Set) verifyInfo.get("permissionCodes");
// 2.设置角色信息
if (rs != null && rs.size() > 0) {
info.addRoles(rs);
}
// 3.设置权限信息
if (ps != null && ps.size() > 0) {
info.addStringPermissions(ps);
}
return info;
}
}
6.2自定义异常
public class AuthenticationFilter extends FormAuthenticationFilter {
//未登入
@Override
protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
response.setContentType("application/json; charset=utf-8");
response.setCharacterEncoding("UTF-8");
response.getWriter().print("{\"errorCode\":444,\"errorMsg\":\"未登入\"}");
response.flushBuffer();
return false;
}
}
/**
* 全局未授权异常-捕获&处理
*
* 本项目使用场景: shiro鉴权时抛出的未授权异常未处理直接响应客户端,使用全局异常注解@ControllerAdvice 捕获处理
*
*/
@RestControllerAdvice
public class UnauthorizedExceptionHandler {
/**
* 处理UnauthorizedException
*
* @param req
* @param e
* @return
*/
@ExceptionHandler(value = UnauthorizedException.class)
public Map defaultExceptionHandler(HttpServletRequest req, Exception e) {
Map exception_response = new HashMap<>();
exception_response.put("errorCode", 445);
exception_response.put("errorMsg", "拒绝访问-权限不足");
return exception_response;
}
}
后期持续更新springBoot的各种应用场景...