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
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
public
ModelAndView delete(@PathVariable(
"
blogId
"
) Long blogId,@PathVariable(
"
msgId
"
) Long msgId,HttpServletRequest request,HttpServletResponse response)
{
3
}
1.springmvc web.xml配置
1
<!-- 该servlet为tomcat,jetty等容器提供,将静态资源映射从/改为/static/目录，如原来访问 http://localhost/foo.css ,现在http://localhost/static/foo.css -->
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
<!-- URL重写filter,用于将访问静态资源http://localhost/foo.css 转为http://localhost/static/foo.css -->
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
<!-- 覆盖default servlet的/, springmvc servlet将处理原来处理静态资源的映射 -->
31
< servlet-mapping >
32
< servlet-name >
springmvc
</
servlet-name
>
33
< url-pattern >
/
</
url-pattern
>
34
</ servlet-mapping >
35
36
<!-- 浏览器不支持put,delete等method,由该filter将/blog?_method=delete转换为标准的http delete方法 -->
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
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
/**
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<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
/** 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
< 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.
http://tuckey.org/urlrewrite/, 重写规则如下
1
< urlrewrite >
2
<!-- 访问jsp及jspx将不rewrite url,其它.js,.css,.gif等将重写,如 /foo.gif => /static/foo.gif -->
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
>
标签：RequestMapping,Springmvc,new,userInfo,讲解,ModelAndView,RESTful,id,userinfo From： https://blog.51cto.com/u_15740686/5951113