上传代码

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zhangdongxu
2017-12-19 14:55:52 +08:00
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/**
* @Title: ApiVersionCondition.java
* @Package com.nis.restful
* @Description: TODO(用一句话描述该文件做什么)
* @author darnell
* @date 2016年8月15日 上午10:14:21
* @version V1.0
*/
package com.nis.restful;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.http.HttpServletRequest;
import org.springframework.web.servlet.mvc.condition.RequestCondition;
/**
* @ClassName: ApiVersionCondition
* @Description: TODO(定义一个条件筛选器,增加版本号匹配规则)
* @author (darnell)
* @date 2016年8月15日 上午10:14:21
* @version V1.0
*/
public class ApiVersionCondition implements RequestCondition<ApiVersionCondition> {
// 路径中版本的前缀, 这里用 /v[1-9]/的形式
private final static Pattern VERSION_PREFIX_PATTERN = Pattern.compile("v(\\d+)");
private int apiVersion;
public ApiVersionCondition(int apiVersion){
this.apiVersion = apiVersion;
}
/**
* @return apiVersion
*/
public int getApiVersion() {
return apiVersion;
}
@Override
public ApiVersionCondition combine(ApiVersionCondition other) {
// 采用最后定义优先原则,则方法上的定义覆盖类上面的定义
return new ApiVersionCondition(other.getApiVersion());
}
@Override
public int compareTo(ApiVersionCondition other, HttpServletRequest request) {
// 优先匹配最新的版本号
return other.getApiVersion() - this.apiVersion;
}
@Override
public ApiVersionCondition getMatchingCondition(HttpServletRequest request) {
System.out.println("&&&&&&&&&" + request.getPathInfo());
Matcher m = VERSION_PREFIX_PATTERN.matcher(request.getPathInfo());
System.out.println("---"+apiVersion);
if(m.find()){
Integer version = Integer.valueOf(m.group(1));
System.out.println("****"+version+"---"+apiVersion);
if(version >= this.apiVersion) // 如果请求的版本号大于配置版本号, 则满足
return this;
}
return null;
}
}