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Spring Boot手工开启、回滚事务 添加注解@Autowired PlatformTransactionManager platformTransactionManager; @Autowired TransactionDefinition transactionDefinition;启用事务TransactionStatus transactionStatus = platformTransactionManager.getTransaction(transactionDefinition);提交事务platformTransactionManager.commit(transactionStatus);回滚事务platformTransactionManager.rollback(transactionStatus);
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Oracle父子结构转分级码结构 第一步增加列用于临时处理ALTER TABLE GSPUSERDOMAIN ADD fid varchar2(36) ALTER TABLE GSPUSERDOMAIN ADD pathtemp varchar2(36) 第二步插入父节点insert into GSPUSERDOMAIN(id,code,name,PATH,LAYER,isdetail,fid,pathtemp) select id,danweidh,mingcheng,ID,level,connect_by_isleaf,shangji,'' from JIGOU start with id in(select id from JIGOU where shangji IS NULL) connect by shangji=prior id order by shangji 第三步处理路径declare vInit VARCHAR2(36):=0; begin for i in 1..10 loop declare CURSOR emp_cur IS select * From GSPUSERDOMAIN where LAYER=i FOR UPDATE; BEGIN FOR emp_row IN emp_cur LOOP select(case when max(pathtemp)is null then '0' else max(pathtemp) end)+1 into vInit From GSPUSERDOMAIN where nvl(trim(GSPUSERDOMAIN.fid),' ')=nvl(trim(emp_row.fid),' '); vInit:=LPAD(vInit,4,'0'); UPDATE GSPUSERDOMAIN SET pathtemp=(select pathtemp from GSPUSERDOMAIN aa where aa.id=GSPUSERDOMAIN.fid)||vInit WHERE CURRENT OF emp_cur; END LOOP; end; end loop; end;第四步骤修改pathUPDATE GSPUSERDOMAIN SET PATH = pathtemp 最后一步，删除临时列alter table GSPUSERDOMAIN drop column fid; alter table GSPUSERDOMAIN drop column pathtemp;
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VSCode配置Java运行环境相关设置 { "editor.minimap.enabled": false, "window.zoomLevel": 0, "workbench.editor.enablePreview": false, "workbench.editor.enablePreviewFromQuickOpen": false, "editor.renderIndentGuides": false, "editor.highlightActiveIndentGuide": false, "java.home": "C:\\Java\\jdk1.8.0_181", "editor.fontSize": 18, "editor.lineHeight": 30, "maven.executable.path": "D:\\我的文档\\apache\\apache-maven-3.6.1\\bin\\mvn.cmd", "java.configuration.maven.userSettings": "D:\\我的文档\\apache\\apache-maven-3.6.1\\conf\\settings.xml", "maven.terminal.customEnv": [ { "environmentVariable": "JAVA_HOME", "value": "C:\\Java\\jdk1.8.0_181" } ], "terminal.integrated.shell.linux": "/bin/bash", "java.jdt.ls.vmargs": "-noverify -Xmx1G -XX:+UseG1GC -XX:+UseStringDeduplication", "explorer.confirmDelete": false, "java.configuration.checkProjectSettingsExclusions": false, "editor.suggestSelection": "first", "vsintellicode.modify.editor.suggestSelection": "automaticallyOverrodeDefaultValue", "git.enableSmartCommit": true, "git.autofetch": true, "files.autoGuessEncoding": true, "workbench.iconTheme": "vscode-great-icons" }
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Spring Boot原生异步请求API说明 异步请求api调用说明在编写实际代码之前，我们来了解下一些关于异步请求的api的调用说明。获取AsyncContext：根据HttpServletRequest对象获取AsyncContext asyncContext = request.startAsync(); 设置监听器:可设置其开始、完成、异常、超时等事件的回调处理public interface AsyncListener extends EventListener { void onComplete(AsyncEvent event) throws IOException; void onTimeout(AsyncEvent event) throws IOException; void onError(AsyncEvent event) throws IOException; void onStartAsync(AsyncEvent event) throws IOException; }说明onStartAsync：异步线程开始时调用onError：异步线程出错时调用onTimeout：异步线程执行超时调用onComplete：异步执行完毕时调用一般上，我们在超时或者异常时，会返回给前端相应的提示，比如说超时了，请再次请求等等，根据各业务进行自定义返回。同时，在异步调用完成时，一般需要执行一些清理工作或者其他相关操作。需要注意的是只有在调用request.startAsync前将监听器添加到AsyncContext，监听器的onStartAsync方法才会起作用，而调用startAsync前AsyncContext还不存在，所以第一次调用startAsync是不会被监听器中的onStartAsync方法捕获的，只有在超时后又重新开始的情况下onStartAsync方法才会起作用。设置超时：通过setTimeout方法设置，单位：毫秒。一定要设置超时时间，不能无限等待下去，不然和正常的请求就一样了。Servlet方式实现异步请求面已经提到，可通过HttpServletRequest对象中获得一个AsyncContext对象，该对象构成了异步处理的上下文。所以，我们来实际操作下。编写一个简单控制层package Cc.LiSen.Controllers; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.*; import javax.servlet.AsyncContext; import javax.servlet.AsyncEvent; import javax.servlet.AsyncListener; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; /** * ClassName: AsyncController <br/> * Description: <br/> * date: 2019/7/28 16:06<br/> * * @since JDK 1.8 */ @RestController @Api(tags = "测试异步请求") @ResponseBody @RequestMapping(value = "/AsyncTest") public class ServletAsyncController { private final static Logger logger = LoggerFactory.getLogger(ServletAsyncController.class); @PostMapping(value = "test") @ApiOperation(value = "测试异步请求") public void test(HttpServletRequest request, HttpServletResponse response) { AsyncContext context = request.startAsync(); context.addListener(new AsyncListener() { @Override public void onComplete(AsyncEvent asyncEvent) throws IOException { logger.info("执行完成"); } @Override public void onTimeout(AsyncEvent asyncEvent) throws IOException { logger.info("执行超时："); } @Override public void onError(AsyncEvent asyncEvent) throws IOException { logger.info("发生错误：" + asyncEvent.getThrowable()); } @Override public void onStartAsync(AsyncEvent asyncEvent) throws IOException { logger.info("开始执行："); } }); //设置超时 context.setTimeout(2000); //开启线程 context.start(new Runnable() { @Override public void run() { try{ Thread.sleep(100); logger.info("内部线程："+Thread.currentThread().getName()); context.getResponse().setCharacterEncoding("UTF-8"); context.getResponse().setContentType("text/html;charset=utf-8"); context.getResponse().getWriter().println("这是内部线程"); //异步请求完成通知 //此时整个请求才完成 //其实可以利用此特性 进行多条消息的推送 把连接挂起。。 context.complete(); } catch (InterruptedException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }); //此时之类 request的线程连接已经释放了 logger.info("线程：" + Thread.currentThread().getName()); } }注意：异步请求时，可以利用ThreadPoolExecutor自定义个线程池使用过滤器时，需要加入asyncSupported为true配置，开启异步请求支持@WebServlet(urlPatterns = "/okong", asyncSupported = true ) public class AsyncServlet extends HttpServlet ...
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Spring Boot自定义启动Banner 看烦了自带的Banner，动手修改一个属于自己的Banner，提现逼格的时候到了~哈哈，以下是官网给的配置指南：文字形式其实，替换很简单，只需要在classpath路径下创建一个banner.txt即可。具体的一些变量官网也有给出，具体如下：${AnsiColor.BRIGHT_YELLOW} //////////////////////////////////////////////////////////////////// // _ooOoo_ // // o8888888o // // 88" . "88 // // (| ^_^ |) // // O\ = /O // // ____/`---'\____ // // .' \\| |// `. // // / \\||| : |||// \ // // / _||||| -:- |||||- \ // // | | \\\ - /// | | // // | \_| ''\---/'' | | // // \ .-\__ `-` ___/-. / // // ___`. .' /--.--\ `. . ___ // // ."" '< `.___\_<|>_/___.' >'"". // // | | : `- \`.;`\ _ /`;.`/ - ` : | | // // \ \ `-. \_ __\ /__ _/ .-` / / // // ========`-.____`-.___\_____/___.-`____.-'======== // // `=---=' // // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ // // 佛祖保佑 永不宕机 永无BUG // //////////////////////////////////////////////////////////////////// 关闭banner如果需要关闭banner，可以通过设置SpringApplicationBuilder来设置bannerMode为OFF。 SpringApplicationBuilder builder = new SpringApplicationBuilder(DemoApplication.class); builder.bannerMode(Banner.Mode.OFF); builder.run(args);
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Spring Boot热部署 但当服务功能一多，启动速度缓慢时，还是配置个热部署比较方便。在SpringBoot中，只需要加入一个spring-boot-devtools即可。<!-- 增加热部署--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency>若不生效，可试着在打包工具spring-boot-maven-plugin下的configuration加入true看看，具体配置项如下：<build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin> </plugins> </build>
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Spring Boot配置跨域 同源策略很多人对跨域有一种误解，以为这是前端的事，和后端没关系，其实不是这样的，说到跨域，就不得不说说浏览器的同源策略。同源策略是由Netscape提出的一个著名的安全策略，它是浏览器最核心也最基本的安全功能，现在所有支持JavaScript的浏览器都会使用这个策略。所谓同源是指协议、域名以及端口要相同。同源策略是基于安全方面的考虑提出来的，这个策略本身没问题，但是我们在实际开发中，由于各种原因又经常有跨域的需求，传统的跨域方案是JSONP，JSONP虽然能解决跨域但是有一个很大的局限性，那就是只支持GET请求，不支持其他类型的请求，而今天我们说的CORS（跨域源资源共享）（CORS，Cross-origin resource sharing）是一个W3C标准，它是一份浏览器技术的规范，提供了Web服务从不同网域传来沙盒脚本的方法，以避开浏览器的同源策略，这是JSONP模式的现代版。在Spring框架中，对于CORS也提供了相应的解决方案，今天我们就来看看SpringBoot中如何实现CORS。前端请求<!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <script src="jquery.min.js"></script> </head> <body> <div id="myDiv"></div> <script> $(document).ready(function () { $.ajax({ url: "http://localhost:8080/CrossOrigin", type:"post", async: false, success:function(data){ $("#myDiv").html(data); } }); }); </script> </body> </html>配置后端/** * @author laughing * @date 2020/9/26 * @site https://lisen.cc */ @RestController public class CorsController { /** * 方法配置跨域 * @return String */ @RequestMapping("/CrossOrigin") public String crossOrigin(){ return "crossOrigin"; } }打开前端页面，我们可以看一下，报错信息如下，也就是出现了跨域通过CrossOrigin配置跨域我们可以将@CrossOrigin注解到方法上，实现跨域请求，我们对后端方法改造如下：/** * @author laughing * @date 2020/9/26 * @site https://lisen.cc */ @RestController public class CorsController { /** * 方法配置跨域 * @return String */ @RequestMapping("/CrossOrigin") @CrossOrigin(origins = "http://localhost:1234") public String crossOrigin(){ return "crossOrigin"; } }通过CorsFilter配置跨域继续后端改造修改yaml文件，增加跨域配置信息#配置跨域 cors: allowedOrigin: - http://localhost:1234 allowCredentials: - true allowMethods: - GET - POST - PUT - DELETE maxAge: 7200 path: /** 增加CrosFilter配置文件package cc.lisen.cors.config; import lombok.Getter; import lombok.Setter; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.cors.CorsConfiguration; import org.springframework.web.cors.UrlBasedCorsConfigurationSource; import org.springframework.web.filter.CorsFilter; import java.util.List; /** * 跨域配置 * * @author laughing * @date 2020/9/26 * @site https://lisen.cc */ @Configuration @ConfigurationProperties(prefix = "cors") @Getter @Setter public class CorsFilterConfig { private boolean allowCredentials; private List<String> allowedOrigin; private List<String> allowMethods; private long maxAge; private String path; /** * 配置跨域 * * @return CorsFilter */ @Bean public CorsFilter corsFilter() { CorsConfiguration corsConfiguration = new CorsConfiguration(); this.allowedOrigin.forEach(corsConfiguration::addAllowedOrigin); this.allowMethods.forEach(corsConfiguration::addAllowedMethod); corsConfiguration.setAllowCredentials(this.allowCredentials); corsConfiguration.setMaxAge(this.maxAge); UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource(); urlBasedCorsConfigurationSource.registerCorsConfiguration(this.path, corsConfiguration); return new CorsFilter(urlBasedCorsConfigurationSource); } } 增加请求/** * @author laughing * @date 2020/9/26 * @site https://lisen.cc */ @RestController public class CorsController { /** * 方法配置跨域 * @return String */ @RequestMapping("/CrossOrigin") // @CrossOrigin(origins = "http://localhost:1234") public String crossOrigin(){ return "crossOrigin"; } }再次请求，可以发现仍然能够正常访问通过WebMvcConfigurer配置跨域@Configuration public class MyWebMvcConfig implements WebMvcConfigurer { @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/cors/**") .allowedHeaders("*") .allowedMethods("*") .maxAge(1800) .allowedOrigins("http://localhost:8081"); } }
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Spring Boot基于FileUpload包方式上传多个文件 添加万恶的依赖<!-- 附件上传--> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.3</version> </dependency>修改配置文件，屏蔽servlet自带的附件上传#配置上传文件信息 http: multipart: # 最大支持文件大小 即单个文件大小 max-file-size: 2m # 最大支持请求大小 即一次性上传的总文件大小 max-request-size: 10m #取消Servlet自带的上传 enabled: false 增加控制器package Cc.LiSen.Controllers; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.util.ResourceUtils; import org.springframework.web.bind.annotation.*; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletRequest; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; /** * ClassName: CommonsFileUpload <br/> * Description: <br/> * date: 2019/7/28 9:28<br/> * * @since JDK 1.8 */ @RestController @ResponseBody @RequestMapping(value = "/commonsfileupload") public class CommonsFileUpload { private static final Logger logger = LoggerFactory.getLogger(CommonsFileUpload.class); @PostMapping("/upload") public String Upload(@RequestParam MultipartFile[] files, @RequestParam String name, HttpServletRequest request) throws IOException { if (files.length <= 0) { return "请先选择要上传的附件"; } for (MultipartFile file : files) { if (file.isEmpty()) { return "文件信息不能为空"; } String fileType = file.getContentType(); String fileName = file.getName(); String fileOriginalName = file.getOriginalFilename(); //String fileSavePath = request.getServletContext().getRealPath("/static/sources"); //使用jar包，放到同级目录 File rootPath = new File(ResourceUtils.getURL("classpath:").getPath()); String fileSavePath = rootPath.getAbsolutePath()+"/static/upload/"; Date date = new Date(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); fileSavePath = fileSavePath + simpleDateFormat.format(date); fileSavePath = fileSavePath + "/" + fileOriginalName; fileSavePath.replace("/", File.separator); File saveFile = new File(fileSavePath); if (!saveFile.getParentFile().exists()) { saveFile.getParentFile().mkdirs(); } file.transferTo(saveFile); } return "上传成功"; } }
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Spring Boot使用J2EE上传文件 温馨提示这种方式下，其实无需任何配置。只需按正常的web开发项目集成即可添加普通web项目依赖<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>修改配置文件（可选）配置上传文件信息 http: multipart: # 最大支持文件大小 即单个文件大小 max-file-size: 2m # 最大支持请求大小 即一次性上传的总文件大小 max-request-size: 10m 使用package Cc.LiSen.Controllers; import com.sun.jmx.snmp.agent.SnmpMibAgent; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletRequest; import java.io.File; import java.io.IOException; import java.nio.file.Paths; import java.text.SimpleDateFormat; import java.util.Date; @RestController public class J2EEFileUpload { private static final Logger logger = LoggerFactory.getLogger(J2EEFileUpload.class); @PostMapping("/upload") @ResponseBody public String UploadFile(@RequestParam MultipartFile file, HttpServletRequest request) throws IOException { if (file.isEmpty()) { return "上传文件不能为空"; } String fileType = file.getContentType(); String fileName = file.getName(); String originalName = file.getOriginalFilename(); long fileSize = file.getSize(); logger.info("原始文件名为：" + originalName); logger.info("服务器文件名为：" + fileName); logger.info("文件大小为：" + String.valueOf(fileSize)); String fileSavePath = request.getServletContext().getRealPath("/static/upload/"); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-ddd"); fileSavePath = fileSavePath + simpleDateFormat.format(new Date())+"//"; fileSavePath = fileSavePath.replace("//",File.separator); File saveFile = new File(fileSavePath+originalName); if(!saveFile.getParentFile().exists()){ saveFile.getParentFile().mkdirs(); } file.transferTo(saveFile); return "上传成功"; } }
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Spring Boot集成和使用Swagger2 Swagger简洁Swagger是一款RESTful接口的文档在线自动生成、功能测试功能框架。一个规范和完整的框架，用于生成、描述、调用和可视化RESTful风格的Web服务，加上swagger-ui，可以有很好的呈现。万恶的添加依赖<!--添加swagger --> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.8.0</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.8.0</version> </dependency>修改application.yml增加swagger配置属性，用于配置是否启用#配置swagger是否开启 swagger: enabled: true 增加配置文件Swagger2Config.java主要是添加注解@EnableSwagger2和定义Docket的bean类。package Cc.LiSen.Configurations; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import springfox.documentation.builders.ApiInfoBuilder; import springfox.documentation.builders.PathSelectors; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.service.ApiInfo; import springfox.documentation.service.Contact; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; @Configuration @EnableSwagger2 public class Swagger2Config { @Value(value = "${swagger.enabled}") boolean swaggerEnabled; private ApiInfo apiInfo() { return new ApiInfoBuilder().title("李森的博客") .description("李森的博客") .contact(new Contact("李森的博客", "https://lisen.cc", "lisen@lisen.cc")) .version("0.1").build(); } @Bean public Docket createRestApi() { return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) //是否开启 .enable(swaggerEnabled) .select() // 扫描的路径包 .apis(RequestHandlerSelectors.basePackage("Cc.LiSen.Api")) // 指定路径处理PathSelectors.any()代表所有的路径 .paths(PathSelectors.any()).build().pathMapping("/*"); } }修改实体类package Cc.LiSen.Pojos; import Cc.LiSen.Common.Utils.HtmlUtil; import com.fasterxml.jackson.annotation.JsonBackReference; import io.swagger.annotations.ApiModel; import io.swagger.annotations.ApiModelProperty; import lombok.Data; import lombok.extern.java.Log; import org.springframework.format.annotation.DateTimeFormat; import javax.persistence.*; import javax.validation.constraints.NotBlank; import java.io.Serializable; import java.util.Date; /** * ClassName: Post <br/> * Description: <br/> * date: 2019/7/23 9:25<br/> * * @since JDK 1.8 */ @Entity @Table(name = "posts") @ApiModel @Data public class Post implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "ID") @ApiModelProperty(name = "id", dataType = "long", value = "内码", example = "1") @NotBlank(message = "内码不能为空") Long id; @Column(name = "post_author") Long postAuthor; @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") @Column(name = "post_date") Date postDate; @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") @Column(name = "post_date_gmt") Date postDateGmt; @Column(name = "post_content") String postContent; @Column(name = "post_title") String postTitle; @Column(name = "post_excerpt") String postExcerpt; @Column(name = "post_status", length = 20) String postStatus; @Column(name = "ping_status", length = 20) String pingStatus; @Column(name = "comment_status", length = 20) String commentStatus; @Column(name = "post_password", length = 255) String postPassword; @Column(name = "post_name") String postName; @Column(name = "to_ping") String toPing; @Column(name = "pinged") String pinged; @Column(name = "post_modified") @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") String postModified; @Column(name = "post_modified_gmt") @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") String postModifiedGmt; @Column(name = "post_content_filtered") String postContentFiltered; @Column(name = "post_parent") Long postParent; @Column(name = "guid") String guid; @Column(name = "menu_order") int menuOrder; @ManyToOne @JoinColumn(name = "postType") PostType postType; @Column(name = "comment_count") Long commentCount; public String getThumnailImage() { return HtmlUtil.getSingleImgStr(postContent); } @Column(insertable = false, updatable = false) String thumnailImage; } 修改控制器添加文档内容(一般上是在Controller，请求参数上进行注解。package Cc.LiSen.Api; import Cc.LiSen.Pojos.Post; import Cc.LiSen.Services.PostService; import com.sun.xml.internal.bind.v2.model.core.ID; import io.swagger.annotations.Api; import io.swagger.annotations.ApiImplicitParam; import io.swagger.annotations.ApiOperation; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.util.StringUtils; import org.springframework.web.bind.annotation.*; import java.util.ArrayList; import java.util.List; @ResponseBody @RestController @RequestMapping(value = "/post") @Api(tags = "文章操作Api") public class PostApi { @Autowired PostService postService; @GetMapping("/get/{id}") @ApiOperation("根据ID获取文章") @ApiImplicitParam(name = "id",value = "文章ID",required = true) public List<Post> getPost(@PathVariable long id) { if (StringUtils.isEmpty(id)) { return postService.getAllPosts(); } else { List<Post> posts = new ArrayList<>(); posts.add(postService.getPostByID(id)); return posts; } } ; } Swagger访问与使用api首页路径：http://127.0.0.1:8080/swagger-ui.html调试：点击需要访问的api列表，点击try it out!按钮，即可弹出一下页面：Swagger常用属性说明作用范围 API 使用位置对象属性 @ApiModelProperty 用在出入参数对象的字段上协议集描述 @Api 用于controller类上协议描述 @ApiOperation 用在controller的方法上Response集 @ApiResponses 用在controller的方法上Response @ApiResponse 用在 @ApiResponses里边非对象参数集 @ApiImplicitParams 用在controller的方法上非对象参数描述 @ApiImplicitParam 用在@ApiImplicitParams的方法里边描述返回对象的意义 @ApiModel 用在返回对象类上常用的注解@Api、@ApiOperation、@ApiModel、@ApiModelProperty示例中有进行标注，对于其他注解，大家可自动谷歌，毕竟常用的就这几个了。有了swagger之后，原本一些post请求需要postman这样的调试工具来进行发起，而现在直接在页面上就可以进行调试了，是不是很爽！对于服务的调用者而已，有了这份api文档也是一目了然，不需要和后端多少沟通成本，按着api说明进行前端开发即可。
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Spring Boot自定义校验注解 自定义注解，主要是实现ConstraintValidator的处理类即可，这里已编写一个校验常量的注解为例：参数值只能为特定的值。自定义注解package Cc.LiSen.Validators; import javax.validation.Constraint; import javax.validation.Payload; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; /** * ClassName: EmailValidator <br/> * Description: <br/> * date: 2019/7/26 20:44<br/> * * @since JDK 1.8 */ @Constraint(validatedBy = EmailValidatorHandler.class) @Target({ElementType.METHOD,ElementType.FIELD,ElementType.ANNOTATION_TYPE,ElementType.CONSTRUCTOR,ElementType.PARAMETER}) @Retention(RetentionPolicy.RUNTIME) public @interface EmailValidator { String message() default "只能使用lisen.org后缀的邮箱"; Class<?>[] groups() default {}; Class<? extends Payload>[] payload() default {}; String value(); }注解处理类package Cc.LiSen.Validators; import org.apache.tomcat.util.bcel.classfile.Constant; import javax.validation.ConstraintValidator; import javax.validation.ConstraintValidatorContext; import java.util.Date; /** * ClassName: EmailValidatorHandler <br/> * Description: <br/> * date: 2019/7/26 19:54<br/> * * @since JDK 1.8 */ public class EmailValidatorHandler implements ConstraintValidator<EmailValidator, String> { private String regEmail; @Override public void initialize(EmailValidator constraintAnnotation) { regEmail = constraintAnnotation.value(); } @Override public boolean isValid(String value, ConstraintValidatorContext context) { return regEmail.endsWith(value); } }使用注解package Cc.LiSen.Pojos; import Cc.LiSen.Validators.EmailValidator; import lombok.Data; import org.hibernate.annotations.ColumnDefault; import org.hibernate.validator.constraints.Length; import org.hibernate.validator.constraints.URL; import org.springframework.format.annotation.DateTimeFormat; import javax.persistence.*; import java.util.Date; /** * ClassName: User <br/> * Description: <br/> * date: 2019/7/21 11:38<br/> * * @since JDK 1.8 */ @Table(name="Users") @Entity public class User { public long getID() { return ID; } public void setID(long ID) { this.ID = ID; } public String getUserLogin() { return userLogin; } public void setUserLogin(String userLogin) { this.userLogin = userLogin; } public String getUserPass() { return userPass; } public void setUserPass(String userPass) { this.userPass = userPass; } public String getUserNicename() { return userNicename; } public void setUserNicename(String userNicename) { this.userNicename = userNicename; } public String getUserEmail() { return userEmail; } public void setUserEmail(String userEmail) { this.userEmail = userEmail; } public String getUserUrl() { return userUrl; } public void setUserUrl(String userUrl) { this.userUrl = userUrl; } public Date getUserRegistered() { return userRegistered; } public void setUserRegistered(Date userRegistered) { this.userRegistered = userRegistered; } public String getUserActivation_key() { return userActivation_key; } public void setUserActivation_key(String userActivation_key) { this.userActivation_key = userActivation_key; } public int getUserStatus() { return userStatus; } public void setUserStatus(int userStatus) { this.userStatus = userStatus; } public String getDisplayName() { return displayName; } public void setDisplayName(String displayName) { this.displayName = displayName; } @Id @GeneratedValue(strategy = GenerationType.IDENTITY) public long ID; @Column(name = "user_login",length = (60)) private String userLogin; private String userPass; private String userNicename; @Length(min = 0,max = 10,message = "邮箱长度不能超过10位") @EmailValidator(value = "@lisen.org") private String userEmail; @URL private String userUrl; @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") private Date userRegistered; private String userActivation_key; private int userStatus; private String displayName; } 使用@RequestMapping("/page/{num}") ModelAndView GetArticleByPage(@PathVariable int num) { List<PostType> postTypesTop = postTypeService.findTopMenu(1, "posttype_order"); List<PostType> postTypesNav = postTypeService.findTopMenu(0, "posttype_order"); Page<Post> postPage = postService.findAllPosts(num, 10, Sort.Direction.DESC, new String[]{"postDate"}); int pageNum = postPage.getTotalPages(); int count = postPage.getNumber(); ModelMap map = new ModelMap(); map.addAttribute("pageNum", pageNum); if (pageNum > num) { map.addAttribute("nextPage", num + 1); } map.put("posttypestop", postTypesTop); map.put("posttypesnav", postTypesNav); map.put("posts", postPage.getContent()); return new ModelAndView("index", map); }
