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)
2
![](http://img.e-com-net.com/image/info8/a84edfb418894590939dbb40ae12ae74.gif)
public
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)
2
![](http://img.e-com-net.com/image/info8/a84edfb418894590939dbb40ae12ae74.gif)
public
ModelAndView delete(@PathVariable(
"
blogId
"
) Long blogId,@PathVariable(
"
msgId
"
) Long msgId,HttpServletRequest request,HttpServletResponse response)
{ 3
}
1.springmvc web.xml配置
1
2
<
servlet-mapping
>
3
<
servlet-name
>
default
servlet-name
>
4
<
url-pattern
>
/static/*
url-pattern
>
5
servlet-mapping
>
6
<
servlet
>
7
<
servlet-name
>
springmvc
servlet-name
>
8
<
servlet-class
>
org.springframework.web.servlet.DispatcherServlet
servlet-class
>
9
<
load-on-startup
>
1
load-on-startup
>
10
servlet
>
11
12
13
<
filter
>
14
<
filter-name
>
UrlRewriteFilter
filter-name
>
15
<
filter-class
>
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter
filter-class
>
16
<
init-param
>
17
<
param-name
>
confReloadCheckInterval
param-name
>
18
<
param-value
>
60
param-value
>
19
init-param
>
20
<
init-param
>
21
<
param-name
>
logLevel
param-name
>
22
<
param-value
>
DEBUG
param-value
>
23
init-param
>
24
filter
>
25
<
filter-mapping
>
26
<
filter-name
>
UrlRewriteFilter
filter-name
>
27
<
url-pattern
>
/*
url-pattern
>
28
filter-mapping
>
29
30
31
<
servlet-mapping
>
32
<
servlet-name
>
springmvc
servlet-name
>
33
<
url-pattern
>
/
url-pattern
>
34
servlet-mapping
>
35
36
37
<
filter
>
38
<
filter-name
>
HiddenHttpMethodFilter
filter-name
>
39
<
filter-class
>
org.springframework.web.filter.HiddenHttpMethodFilter
filter-class
>
40
filter
>
41
42
<
filter-mapping
>
43
<
filter-name
>
HiddenHttpMethodFilter
filter-name
>
44
<
servlet-name
>
springmvc
servlet-name
>
45
filter-mapping
>
2.webapp/WEB-INF/springmvc-servlet.xml配置,使用如下两个class激活@RequestMapping annotation
1
<
bean
class
="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"
/>
2
<
bean
class
="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"
/>
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
"
)
7
![](http://img.e-com-net.com/image/info8/a84edfb418894590939dbb40ae12ae74.gif)
public
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![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//**16
* 通过spring自动注入 17
**/18![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
public void setUserInfoManager(UserInfoManager manager)
{ 19
this.userInfoManager = manager; 20
}21
22![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 列表 */23
@RequestMapping 24![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
public ModelAndView index(HttpServletRequest request,HttpServletResponse response,UserInfo userInfo)
{ 25
PageRequest<Map> 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![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 进入新增 */34
@RequestMapping(value="/new") 35![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
public ModelAndView _new(HttpServletRequest request,HttpServletResponse response,UserInfo userInfo) throws Exception
{ 36
return new ModelAndView("/userinfo/new","userInfo",userInfo); 37
}38
39![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 显示 */40
@RequestMapping(value="/{id}") 41![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
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![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 编辑 */47
@RequestMapping(value="/{id}/edit") 48![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
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![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 保存新增 */54
@RequestMapping(method=RequestMethod.POST) 55![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
public ModelAndView create(HttpServletRequest request,HttpServletResponse response,UserInfo userInfo) throws Exception
{ 56
userInfoManager.save(userInfo); 57
return new ModelAndView(LIST_ACTION); 58
}59
60![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 保存更新 */61
@RequestMapping(value="/{id}",method=RequestMethod.PUT) 62![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
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![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 删除 */70
@RequestMapping(value="/{id}",method=RequestMethod.DELETE) 71![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
public ModelAndView delete(@PathVariable Long id,HttpServletRequest request,HttpServletResponse response)
{ 72
userInfoManager.removeById(id); 73
return new ModelAndView(LIST_ACTION); 74
}75
76![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
/** *//** 批量删除 */77
@RequestMapping(method=RequestMethod.DELETE) 78![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
public ModelAndView batchDelete(HttpServletRequest request,HttpServletResponse response)
{ 79
String[] items = request.getParameterValues("items"); 80![](http://img.e-com-net.com/image/info8/76d93eee1109450d8b362bfd2f329ccc.gif)
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
<
form:form
action
="${ctx}/userinfo${userInfo.userId}"
method
="put"
>
2
form:form
>
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
<
form
id
="userInfo"
action
="/springmvc_rest_demo/userinfo/2"
method
="post"
>
2
<
input
type
="hidden"
name
="_method"
value
="put"
/>
3
form
>
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
<
urlrewrite
>
2
3
<
rule
>
4
<
condition
operator
="notequal"
next
="and"
type
="request-uri"
>
.*.jsp
condition
>
5
<
condition
operator
="notequal"
next
="and"
type
="request-uri"
>
.*.jspx
condition
>
6
<
from
>
^(/.*\..*)$
from
>
7
<
to
>
/static$1
to
>
8
rule
>
9
urlrewrite
>