进入lookupHandlerMethod方法，其中lookupPath="/LookupTest/test1",根据lookupPath，也就是请求的uri。直接查找urlMap，获取直接匹配的RequestMappingInfo list。这里会匹配到3个RequestMappingInfo。如下
然后进入addMatchingMappings方法
private void addMatchingMappings(Collection<T> mappings, List<Match> matches, HttpServletRequest request) { for (T mapping : mappings) { T match = getMatchingMapping(mapping, request); if (match != null) { matches.add(new Match(match, handlerMethods.get(mapping))); } } }
这个方法的职责是遍历当前请求的uri和mappings中的RequestMappingInfo能否匹配上，如果能匹配上，创建一个相同的RequestMappingInfo对象。再获取RequestMappingInfo对应的handlerMethod。然后创建一个Match对象添加至matches list中。执行完addMatchingMappings方法，回到lookupHandlerMethod。这时候matches还有3个能匹配上的RequestMappingInfo对象。接下来的处理便是对matchers列表进行排序，然后获取列表的第一个元素作为最佳匹配。返回Match的HandlerMethod。这里进入RequestMappingInfo的compareTo方法，看一下具体的排序逻辑。代码如下
public int compareTo(RequestMappingInfo other, HttpServletRequest request) { int result = patternsCondition.compareTo(other.getPatternsCondition(), request); if (result != 0) { return result; } result = paramsCondition.compareTo(other.getParamsCondition(), request); if (result != 0) { return result; } result = headersCondition.compareTo(other.getHeadersCondition(), request); if (result != 0) { return result; } result = consumesCondition.compareTo(other.getConsumesCondition(), request); if (result != 0) { return result; } result = producesCondition.compareTo(other.getProducesCondition(), request); if (result != 0) { return result; } result = methodsCondition.compareTo(other.getMethodsCondition(), request); if (result != 0) { return result; } result = customConditionHolder.compareTo(other.customConditionHolder, request); if (result != 0) { return result; } return 0; }
代码里可以看出，匹配的先后顺序是value>params>headers>consumes>produces>methods>custom，看到这里，前面的问题就能轻易得出答案了。在value相同的情况，params更能先匹配。所以那个请求会进入test3()方法。再回到lookupHandlerMethod，在找到HandlerMethod。SpringMVC还会这里再一次检查配置的歧义性，这里检查的原理是通过比较匹配度最高的两个RequestMappingInfo进行比较。此处可能会有疑问在初始化SpringMVC有检查配置的歧义性，这里为什么还会检查一次。假如现在Controller中有如下两个方法，以下配置是能通过初始化歧义性检查的。
@RequestMapping(value = "/test5", method = {RequestMethod.GET, RequestMethod.POST}) @ResponseBody public String test5(){ return "method test5"; } @RequestMapping(value = "/test5", method = {RequestMethod.GET, RequestMethod.DELETE}) @ResponseBody public String test6(){ return "method test6"; }