1.1将log4j替换成为slf4j(将打印语句替换成为日志文件输出结果)

2.正式操作

1.3设置访问路径localhost8080/param/hello1?bname狂飙bid2

3.复杂类型

2.2设置访问路径localhost8080/param/hello2?bname狂飙bid2

4.RequestParam注解传递参数

3.2设置访问路径localhost8080/param/hello3?bname狂飙bid2

5.路径传参

4.2设置访问路径localhost8080/param/hello4/2

6.1导入依赖

7.2设置访问路径localhost8080/param/hello7

8.复合行

1.1将log4j替换成为slf4j(将打印语句替换成为日志文件输出结果)

log4j2.version2.9.1/log4j2.version

log4j2.disruptor.version3.2.0/log4j2.disruptor.version

slf4j.version1.7.13/slf4j.version

dependencygroupIdorg.slf4j/groupIdartifactIdslf4j-api/artifactIdversion${slf4j.version}/version

/dependency

dependencygroupIdorg.slf4j/groupIdartifactIdjcl-over-slf4j/artifactIdversion${slf4j.version}/versionscoperuntime/scope

dependencygroupIdorg.apache.logging.log4j/groupIdartifactIdlog4j-api/artifactIdversion${log4j2.version}/version

/dependency

dependencygroupIdorg.apache.logging.log4j/groupIdartifactIdlog4j-core/artifactIdversion${log4j2.version}/version

/dependency

dependencygroupIdorg.apache.logging.log4j/groupIdartifactIdlog4j-slf4j-impl/artifactIdversion${log4j2.version}/version

/dependency

!--web工程需要包含log4j-web非web工程不需要--

dependencygroupIdorg.apache.logging.log4j/groupIdartifactIdlog4j-web/artifactIdversion${log4j2.version}/versionscoperuntime/scope

/dependency!--需要使用log4j2的AsyncLogger需要包含disruptor--

dependencygroupIdcom.lmax/groupIdartifactIddisruptor/artifactIdversion${log4j2.disruptor.version}/version

/dependency

org.springframework.stereotype.Controller;

import

org.springframework.web.bind.annotation.RequestMapping;/***

author

bid){log.info(简单类型参数bname{},bid:{},bname,bid);return

index;}}1.2构建界面回显

contentTypetext/html;charsetUTF-8

languagejava

/html1.3设置访问路径localhost8080/param/hello1?bname狂飙bid2

3.复杂类型

request){log.info(复杂类型参数bname{},bid:{},request.getParameter(bname),request.getParameter(bid));log.info(复杂类型参数book:{},book.toString()

);return

2.2设置访问路径localhost8080/param/hello2?bname狂飙bid2

4.RequestParam注解传递参数

bookPrice,RequestParam(bookName)

String

3.2设置访问路径localhost8080/param/hello3?bname狂飙bid2

5.路径传参

RequestMapping(/hello4/{bid})public

String

bid){log.info(简单类型参数bid:{},bid);return

index;}

4.2设置访问路径localhost8080/param/hello4/2

6.1导入依赖

jackson.version2.9.3/jackson.version

dependencygroupIdcom.fasterxml.jackson.core/groupIdartifactIdjackson-databind/artifactIdversion${jackson.version}/version/dependencydependencygroupIdcom.fasterxml.jackson.core/groupIdartifactIdjackson-core/artifactIdversion${jackson.version}/version/dependencydependencygroupIdcom.fasterxml.jackson.core/groupIdartifactIdjackson-annotations/artifactIdversion${jackson.version}/version/dependency

6.2创建方法用于验证

map){log.info(RequestBodymap:{},map);return

index;}RequestMapping(/hello6)public

String

map){log.info(RequestBodymap:{},map);return

6.4补充

reqiuestmapper(不安全不具备标识意义)GetMappingDeleteMappinPutMappingPostMapping

String

type1(){System.out.println(PostMapping);return

String

type2(){System.out.println(PutMapping);return

String

type3(){System.out.println(PutMapping);return

String

(){System.out.println(PutMapping);return

index;}

jwt){log.info(RequestBodyjwt:{},jwt);return

index;}

7.2设置访问路径localhost8080/param/hello7

8.复合行

jwt){log.info(RequestBodybook:{},book);log.info(RequestBodymap:{},map);log.info(RequestBodyjwt:{},jwt);return

index;}

HashMap();map.put(code,200);map.put(msg,成功添加);try

{ResponseUtil

request){model.addAttribute(currentName,永州鸭);request.setAttribute(location,来自于道州的);return

index;

ModelAndView();//填充模型数据mv.addObject(sign,头脑灵范...);mv.setViewName(index);//逻辑视图名return

mv;}

转发forward:path和重定向redirect:path这两种跳转方式将会绕开视图解析器的前缀和后缀还有就是如果是在同一controller中则不用使用/从根开始。

转发地址栏不变

hello1(){System.out.println(hell1);return

forward:index;}

它相当于“request.getRequestDispatcher(url).forward(request,response)”。

使用转发既可以转发到jsp

重定向地址栏改变

/hello2(){System.out.println(/hello2);return

redirect:index;}

它相当于“response.sendRedirect(url)”。

需要注意的是如果重定向到jsp页面则jsp页面不能写在WEB-INF目录中否则无法找到。