java - Spring MVC Controller 映射正则表达式

Question

我的 Controller 映射:

@RequestMapping(value = "{objectId}/{objectName: [a-zA-Z-]+}", method = GET)
public String getObjects(@PathVariable Integer objectId, Model model) { ... }

@RequestMapping(value = "{objectId}/{objectName: [a-zA-Z-]+}_{category}", method = GET)
public String getObjectsForCategories(@PathVariable Integer objectId, 
                                      @PathVariable String category, 
                                      Model model) { ... } 

我正在访问的网址:

http://localhost:8080/objects/2/xyz

http://localhost:8080/objects/2/xyz_mobile

Spring 无法找到处理程序并提示找不到 HTTP 请求的映射。

Answer 1

根据Spring MVC documentation:

The @RequestMapping annotation supports the use of regular expressions in URI template variables. The syntax is {varName:regex} where the first part defines the variable name and the second - the regular expression.

因此，您应该删除 : 和 regex 之间的空格，如下所示:

@RequestMapping(value = "{objectId}/{objectName:[a-zA-Z-]+}", method = GET)
                                                ^ Space is removed