簡介

today-web是一個基于Servlet的高性能輕量級Web框架。

安裝

<dependency><groupId>cn.taketoday</groupId><artifactId>today-web</artifactId><version>2.3.6.RELEASE</version> </dependency>Maven Central today-web?search.maven.org

快速入門

• 第一步：新建項目

選擇Maven項目

選擇類型

設置坐標

項目結構

• 第二步：引入依賴

<dependency><groupId>cn.taketoday</groupId><artifactId>today-web</artifactId><version>2.3.6.RELEASE</version> </dependency><dependency><groupId>cn.taketoday</groupId><artifactId>today-context</artifactId><version>2.1.5.RELEASE</version> </dependency><dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>2.3.28</version> </dependency>

到此項目建立完畢，并不需要去管 web.xml 文件

• 第三步：配置控制器

/*** @author TODAY <br>* 2018-12-02 22:30*/ @RestController @RequestMapping("index") public class IndexController {@GET("{key}")public String index(@PathVariable String key) {return key;}@GET@ResponseBody(false)public String index() {return "index";} }

使用模板引擎渲染頁面

Freemarker模板

• 第四步：部署

部署到Tomcat

@GET({key})

@GET

案例

TAKETODAY/today-web-demo?github.com

使用說明

• 通過 @Controller @RestController 配置控制器

//@Controller @RestController @RequestMapping("/users") public class IndexController {}

• 配置請求

@GET("index") @POST("post") @PUT("articles/{id}") ...... @RequestMapping("/users/{id}") @RequestMapping(value = "/users/**", method = {RequestMethod.GET}) @RequestMapping(value = "/users/*.html", method = {RequestMethod.GET}) @RequestMapping(value = {"/index.action", "/index.do", "/index"}, method = RequestMethod.GET) @Interceptor({LoginInterceptor.class, ...}) public (String|List<?>|Set<?>|Map<?>|void|File|Image|...) w+ (request, request, session,servletContext, str, int, long ,byte, short, boolean, @Session("loginUser"),@Header("User-Agent"), @Cookie("JSESSIONID"), @PathVariable("id"), @RequestBody("users"), @Multipart("uploadFiles") MultipartFile[]) {service...return </>; }

• 自定義參數轉換器

@ParameterConverter public class DateConverter implements Converter<String, Date> {@Overridepublic Date doConvert(String source) throws ConversionException {...} }

可以通過xml文件配置簡單視圖，靜態資源，自定義視圖解析器，文件上傳解析器，異常處理器，參數解析器

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE Web-Configuration PUBLIC "-//TODAY BLOG//Web - Configuration DTD 2.0//CN""https://taketoday.cn/framework/web/dtd/web-configuration-2.3.3.dtd"><Web-Configuration><controller prefix="/error/"><action resource="400" name="BadRequest" status="400" /><action resource="403" name="Forbidden" status="403" /><action resource="404" name="NotFound" status="404" /><action resource="500" name="ServerIsBusy" status="500" /><action resource="405" name="MethodNotAllowed" status="405" /></controller><controller><action resource="redirect:http://pipe.b3log.org/blogs/Today" name="today-blog-pipe" /><action resource="redirect:https://taketoday.cn" name="today" /><action resource="redirect:https://github.com" name="github" /><action resource="redirect:/login" name="login.do" /></controller><controller class="cn.taketoday.web.demo.controller.XMLController" name="xmlController" prefix="/xml/"><action name="obj" method="obj" /><action name="test" resource="test" method="test"/></controller></Web-Configuration>

• 文件下載，支持直接返回給瀏覽器圖片

@RequestMapping(value = {"/download"}, method = RequestMethod.GET) public File download(String path) {return new File(path); } @GET("/display") public final BufferedImage display(HttpServletResponse response) throws IOException {response.setContentType("image/jpeg");return ImageIO.read(new File("D:/taketoday.cn/webapps/upload/logo.png")); }@GET("captcha") public final BufferedImage captcha(HttpServletRequest request) throws IOException {BufferedImage image = new BufferedImage(IMG_WIDTH, IMG_HEIGHT, BufferedImage.TYPE_INT_RGB);Graphics graphics = image.getGraphics();graphics.setColor(Color.WHITE);graphics.fillRect(0, 0, IMG_WIDTH, IMG_HEIGHT);Graphics2D graphics2d = (Graphics2D) graphics;drawRandomNum(graphics2d, request);return image; }

• 文件上傳，支持多文件

@RequestMapping(value = { "/upload" }, method = RequestMethod.POST) public final String upload(@Multipart MultipartFile uploadFile) throws IOException {String upload = "D:/www.yhj.com/webapps/upload/";String path = upload + uploadFile.getFileName();File file = new File(path);uploadFile.save(file);return "/upload/" + uploadFile.getFileName(); }@POST({"/upload/multi"}) public final String multiUpload(HttpServletResponse response, @Multipart MultipartFile[] files) throws IOException {String upload = "D:/www.yhj.com/webapps/upload/";for (MultipartFile multipartFile : files) {String path = upload + multipartFile.getFileName();File file = new File(path);System.out.println(path);if (!multipartFile.save(file)) {return "<script>alert('upload error !')</script>";//response.getWriter().print("<script>alert('upload error !')</script>");}}//response.getWriter().print("<script>alert('upload success !')</script>");return "<script>alert('upload success !')</script>"; }

• 登錄實例

@Controller public class UserController {/* <controller prefix="/WEB-INF/view/" suffix=".ftl"><action resource="login" name="login" /><action resource="register" name="register" /></controller> */// @GET("login")@RequestMapping(value = "/login" , method = RequestMethod.GET)public String login() {return "/login/login";//支持jsp,FreeMarker,Thymeleaf,自定義視圖}// @POST("login")@ResponseBody@RequestMapping(value = "/login" , method = RequestMethod.POST)public String login(@RequestParam(required = true) String userId, @RequestParam(required = true) String passwd) {// service...if(userId.equals(passwd)) {return "{"msg":"登錄成功"}";}return "{"msg":"登錄失敗"}";//支持pojo轉json} }

開源

請查看

TAKETODAY/today-web?github.com

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