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