springmvc 的面试题，表示没搞定，求解惑！
去面试，技术官给出一道上机题，没搞定，回来后，写了个demo 还是没搞定，求解
结构是这样的：
这个结构是面试原型和我做了一部分，要求通过z:ukey 自定义标签访问Controller，没搞定，请高手告知还应该做什么？
接下来贴代码=>
Urikey.java:
package com.zz.annotation;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
@Documented
@Inherited
@Retention(RUNTIME)
@Target(ElementType.METHOD)
public @interface Urikey {
String key();
}
DemoController.java:
package com.zz.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.zz.annotation.Urikey;
@Controller
@RequestMapping(value="/demoController")
public class DemoController {
@RequestMapping(value="/getInfo",produces="text/plain;charset=UTF-8")
@Urikey(key = "demoController_getInfo")
@ResponseBody
public String getInfo(){
System.out.println("controller work !");
return "hello";
}
}
UriConverter.java:
package com.zz.process;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
public class UriConverter extends TagSupport {
private static final long serialVersionUID = -3643439400542511406L;
private String uriKey;
private String context;
public String getKey() {
return uriKey;
}
public void setKey(String uriKey) {
this.uriKey = uriKey;
}
public String getContext() {
return context;
}
public void setContext(String context) {
this.context = context;
}
@Override
public int doStartTag() throws JspException {
return EVAL_PAGE;
}
}
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<jsp-config>
<taglib>
<taglib-uri>http://www.zz.com/tags</taglib-uri>
<taglib-location>/WEB-INF/zz-web.tld</taglib-location>
</taglib>
</jsp-config>
</web-app>
zz-web.tld:
<?xml version="1.0" encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
version="2.0">
<description>ZDS Uri Converter</description>
<display-name>ZDS Uri</display-name>
<tlib-version>1.0</tlib-version>
<short-name>z</short-name>
<uri>http://www.zz.com/tags</uri>
<tag>
<description>获取URL</description>
<name>ukey</name>
<tag-class>com.zz.process.UriConverter</tag-class>
<body-content>JSP</body-content>
<attribute>
<description> resolve a key to uri</description>
<name>key</name>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<attribute>
<description>uri context</description>
<name>context</name>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
</tag>
</taglib>
页面：
获取到 Controller中的“hello”
Ko君D日常
9 years, 6 months ago
