SpringBoot项目开发常用技术整合

public class JSONResult {

     private Integer status; // 响应状态

     private String msg; // 响应消息

     private Object data; // 数据

     /*静态工厂方法*/

     public static JSONResult build(Integer status, String msg, Object data) {

         return new JSONResult(status, msg, data);

     }

     public static JSONResult ok(Object data) {

         return new JSONResult(data);

     }

}

public class User {

     private String name;

     @JsonIgnore

     private String password;

     private Integer age;

     @JsonFormat (pattern = "yyyy-MM-dd hh:mm:ss" , locale = "zh" , timezone = "GMT+8" )

     private Date birthday;

     @JsonInclude (JsonInclude.Include.NON_NULL)

     private String desc;

}

<!--热部署-->

<dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-devtools</artifactId>

     <!-- optional= true , 依赖不会传递, 该项目依赖devtools;

         之后依赖boot项目的项目如果想要使用devtools, 需要重新引入 -->

     <optional> true </optional>

</dependency>

#热部署生效

spring.devtools.restart.enabled= true

#设置重启的目录

spring.devtools.restart.additional-paths=src/main/java

#classpath目录下的WEB-INF文件夹内容修改不重启

spring.devtools.restart.exclude=WEB-INF/**

#spring.devtools.restart.exclude= static /**, public /**

// com.lzp.opensource.name=lzp

@Configuration

@1 (prefix = "com.lzp.opensource" )

@PropertySource (value = "classpath:resource.properties" )

public class Resource {

     private String name;

     private String website;

     private String language;

}

server.port= 8088

server.tomcat.uri-encoding=UTF- 8

/**

  * 测试向页面注入属性

  *

  * @param modelMap

  * @return

  */

@RequestMapping ( "/index" )

public String index(ModelMap modelMap) {

     modelMap.addAttribute( "resource" , resource);

     return "freemarker/index" ;

}

/**

  * 测试多层路径，不需要加后缀

  *

  * @return

  */

@RequestMapping ( "/center" )

public String center() {

     return "freemarker/center/center" ;

}

############################################################

# thymeleaf 静态资源配置

############################################################

spring.thymeleaf.prefix=classpath:/templates/

spring.thymeleaf.suffix=.html

spring.thymeleaf.mode=HTML5

spring.thymeleaf.encoding=UTF- 8

spring.thymeleaf.content-type=text/html

# 关闭缓存, 即时刷新, 上线生产环境需要改为 true

spring.thymeleaf.cache= false

## 设置静态文件目录，js、css等

spring.mvc. static -path-pattern=/ static /**

############################################################# i18n 资源配置############################################################spring.messages.basename=i18n/messages# 缓存时间 单位 sspring.messages.cache-duration=1spring.messages.encoding=UTF- 8

roles.manager=managerroles.superadmin=lzp

@ControllerAdvicepublic class ExceptionErrorHandler {    /**     * 异常跳转页面     */     public static final String ERROR_VIEW = "error" ;    @ExceptionHandler (value = Exception. class )    public Object errorHandler(HttpServletRequest request,                               HttpServletResponse response,                               Exception e) throws Exception {        // 后台打印日志        e.printStackTrace();        if (isAjax(request)) {            // 返回ajax响应            return JSONResult.errorException(e.getMessage());        } else {            // 返回页面            ModelAndView mav = new ModelAndView();            mav.addObject("exception", e);            mav.addObject("url", request.getRequestURL());            // 把错误页面返回给前端，而不是使用springboot自带的页面            mav.setViewName(ERROR_VIEW);            return mav;        }    }    /**     * 判断请求是否是ajax请求     *     * @param httpRequest     * @return     */    public static boolean isAjax(HttpServletRequest httpRequest) {        return (httpRequest.getHeader("X-Requested-With") != null                && "XMLHttpRequest"                .equals(httpRequest.getHeader("X-Requested-With").toString()));    }}

//扫描 mybatis mapper 包路径@MapperScan(basePackages = "com.lzp.mapper")// 扫描指定位置@ComponentScan({"com.lzp", "org.n3r.idworker"})@SpringBootApplicationpublic class Application {    public static void main(String[] args) {        SpringApplication.run(Application.class, args);    }}

public interface MyMapper<T> extends Mapper<T>, MySqlMapper<T> {} public interface SysUserMapper extends MyMapper<SysUser> {}

userMapper.insert(user);userMapper.updateByPrimaryKeySelective(user); @Overridepublic List<SysUser> queryUserList(SysUser user) {    // 条件    Example example = new Example(SysUser.class);    Example.Criteria criteria = example.createCriteria();    criteria.andLike("username", "%" + user.getUsername() + "%");    return userMapper.selectByExample(example);}

@Transactional (propagation = Propagation.REQUIRED) @Overridepublic void saveUserTransactional(SysUser user) {    userMapper.insert(user);    int i = 1 / 0 ;    user.setIsDelete( 1 );    userMapper.updateByPrimaryKeySelective(user);}

<dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-starter-data-redis</artifactId>

</dependency>

// 启动定时操作

@EnableScheduling

public class Application {...}

@Component

public class SchedulerJob {

     @Scheduled (fixedRate = 3000 )

     public void printLog() {

         System.out.println( "每隔3秒" );

     }

     @Scheduled (cron = "0/1 * * * * ?" )

     public void printLogInterval() {

         System.out.println( "每隔1秒" );

     }

}

//开启异步调用方法

@EnableAsync

public class Application {

@Component

public class AsyncTask {

     @Async

     public Future<Boolean> doTask11() throws Exception {

         long start = System.currentTimeMillis();

         Thread.sleep( 1000 );

         long end = System.currentTimeMillis();

         System.out.println( "任务1耗时:" + (end - start) + "毫秒" );

         return new AsyncResult<>( true );

     }

}

@Configuration

public class WebMvcConfig implements WebMvcConfigurer {

     @Bean

     public UserTokenInterceptor userTokenInterceptor() {

         return new UserTokenInterceptor();

     }

     /**

      * 注册拦截器

      *

      * @param registry

      */

     @Override

     public void addInterceptors(InterceptorRegistry registry) {

         registry.addInterceptor(userTokenInterceptor())

                 .addPathPatterns( "/testIntercept" )

                 .addPathPatterns( "/hello" )

                 .addPathPatterns( "/shopcart/add" )

     }

}