首页 > 学院 > 开发设计 > 正文

Springmvc构造RESTful详细讲解

2019-11-09 19:33:42
字体:
来源:转载
供稿:网友

http://www.blogjava.net/soken/articles/371548.html

Rest介绍

/blog/1 HTTP GET =>  得到id = 1的blog /blog/1 HTTP DELETE => 删除 id = 1的blog /blog/1 HTTP PUT =>  更新id = 1的blog /blog   HTTP POST =>  新增BLOG

以下详细解一下sPRing rest使用.首先,我们带着如下两个问题查看本文。 1.如何在java构造没有扩展名的RESTful url,如 /forms/1,而不是 /forms/1.do 2.浏览器的form标签不支持提交delete,put请求,如何曲线解决springmvc rest 实现springmvc的resturl是通过@RequestMapping 及@PathVariable annotation提供的,通过如@RequestMapping(value="/blog /{id}",method=RequestMethod.DELETE)即可处理/blog/1 的delete请求.

1@RequestMapping(value=”/blog/{id}”,method=RequestMethod.DELETE) 2public ModelAndView delete(@PathVariable Long id,HttpServletRequest request,HttpServletResponse response) { 3  blogManager.removeById(id); 4  return new ModelAndView(LIST_ACTION); 5}

@RequestMapping @PathVariable如果URL中带参数,则配合使用,如

1@RequestMapping(value=”/blog/{blogId}/message/{msgId}”,method=RequestMethod.DELETE) 2public ModelAndView delete(@PathVariable(“blogId”) Long blogId,@PathVariable(“msgId”) Long msgId,HttpServletRequest request,HttpServletResponse response) { 3}

1.springmvc web.xml配置

1 2  3  default 4  /static/* 5  6  7    springmvc 8    org.springframework.web.servlet.DispatcherServlet 9    1 10  11 12  13  14  UrlRewriteFilter 15  org.tuckey.web.filters.urlrewrite.UrlRewriteFilter 16  17     confReloadCheckInterval 18     60 19    20  21        logLevel 22        DEBUG 23      24  25  26  UrlRewriteFilter 27  /* 28  29 30  31  32    springmvc 33    / 34  35 36  37  38  HiddenHttpMethodFilter 39  org.springframework.web.filter.HiddenHttpMethodFilter 40  41 42  43  HiddenHttpMethodFilter 44  springmvc 45 

2.webapp/WEB-INF/springmvc-servlet.xml配置,使用如下两个class激活@RequestMapping annotation

1 2 3

3.Controller编写

1/** 2  * @RequestMapping(“/userinfo”) 具有层次关系,方法级的将在类一级@RequestMapping之一, 3  * 如下面示例, 访问方法级别的@RequestMapping(“/new”),则URL为 /userinfo/new 4  */ 5@Controller 6@RequestMapping(“/userinfo”) 7public class UserInfoController extends BaseSpringController{ 8  //默认多列排序,example: username desc,createTime asc 9  protected static final String DEFAULT_SORT_COLUMNS = null; 10 11  private UserInfoManager userInfoManager; 12 13  private final String LIST_ACTION = “redirect:/userinfo”; 14 15  /** 16  * 通过spring自动注入 17  **/ 18  public void setUserInfoManager(UserInfoManager manager) { 19  this.userInfoManager = manager; 20  } 21 22  /* 列表 / 23  @RequestMapping 24  public ModelAndView index(HttpServletRequest request,HttpServletResponse response,UserInfo userInfo) { 25  PageRequest pageRequest = newPageRequest(request,DEFAULT_SORT_COLUMNS); 26  //pageRequest.getFilters(); //add custom filters  27 28  Page page = this.userInfoManager.findByPageRequest(pageRequest); 29  savePage(page,pageRequest,request); 30  return new ModelAndView(“/userinfo/list”,”userInfo”,userInfo); 31  } 32 33  /* 进入新增 / 34  @RequestMapping(value=”/new”) 35  public ModelAndView _new(HttpServletRequest request,HttpServletResponse response,UserInfo userInfo) throws Exception { 36  return new ModelAndView(“/userinfo/new”,”userInfo”,userInfo); 37  } 38 39  /* 显示 / 40  @RequestMapping(value=”/{id}”) 41  public ModelAndView show(@PathVariable Long id,HttpServletRequest request,HttpServletResponse response) throws Exception { 42  UserInfo userInfo = (UserInfo)userInfoManager.getById(id); 43  return new ModelAndView(“/userinfo/show”,”userInfo”,userInfo); 44  } 45 46  /* 编辑 / 47  @RequestMapping(value=”/{id}/edit”) 48  public ModelAndView edit(@PathVariable Long id,HttpServletRequest request,HttpServletResponse response) throws Exception { 49  UserInfo userInfo = (UserInfo)userInfoManager.getById(id); 50  return new ModelAndView(“/userinfo/edit”,”userInfo”,userInfo); 51  } 52 53  /* 保存新增 / 54  @RequestMapping(method=RequestMethod.POST) 55  public ModelAndView create(HttpServletRequest request,HttpServletResponse response,UserInfo userInfo) throws Exception { 56  userInfoManager.save(userInfo); 57  return new ModelAndView(LIST_ACTION); 58  } 59 60  /* 保存更新 / 61  @RequestMapping(value=”/{id}”,method=RequestMethod.PUT) 62  public ModelAndView update(@PathVariable Long id,HttpServletRequest request,HttpServletResponse response) throws Exception { 63  UserInfo userInfo = (UserInfo)userInfoManager.getById(id); 64  bind(request,userInfo); 65  userInfoManager.update(userInfo); 66  return new ModelAndView(LIST_ACTION); 67  } 68 69  /* 删除 / 70  @RequestMapping(value=”/{id}”,method=RequestMethod.DELETE) 71  public ModelAndView delete(@PathVariable Long id,HttpServletRequest request,HttpServletResponse response) { 72  userInfoManager.removeById(id); 73  return new ModelAndView(LIST_ACTION); 74  } 75 76  /* 批量删除 / 77  @RequestMapping(method=RequestMethod.DELETE) 78  public ModelAndView batchDelete(HttpServletRequest request,HttpServletResponse response) { 79  String[] items = request.getParameterValues(“items”); 80  for(int i = 0; i < items.length; i++) { 81   java.lang.Long id = new java.lang.Long(items[i]); 82   userInfoManager.removeById(id); 83  } 84  return new ModelAndView(LIST_ACTION); 85  } 86 87} 88

1/userinfo  => index() 2  /userinfo/new => _new() 3  /userinfo/{id} => show() 4  /userinfo/{id}/edit  => edit() 5  /userinfo POST => create() 6  /userinfo/{id} PUT => update() 7  /userinfo/{id} DELETE => delete() 8  /userinfo DELETE => batchDelete() 9

注(不使用 /userinfo/add  => add() 方法是由于add这个方法会被maxthon浏览器当做广告链接过滤掉,因为包含ad字符)4.jsp 编写

1 2

生成的html内容如下, 生成一个hidden的_method=put,并于web.xml中的HiddenHttpMethodFilter配合使用,在服务端将post请求改为put请求

1 2  3

另外一种方法是你可以使用Ajax发送put,delete请求.5.静态资源的URL重写 如上我们描述,现因为将default servlet映射至/static/的子目录,现我们访问静态资源将会带一个/static/前缀. 如 /foo.gif, 现在访问该文件将是 /static/foo.gif. 那如何避免这个前缀呢,那就是应用URL rewrite,现我们使用 http://tuckey.org/urlrewrite/, 重写规则如下

1 2   3   4    .*.jsp 5    .*.jspx 6     ^(/...)7    /static1 8   9


发表评论 共有条评论
用户名: 密码:
验证码: 匿名发表