@PathVariable详解

@PathVariable

当使用@RequestMapping URI template 样式映射时， 即 someUrl/{paramId}, 这时的paramId可通过 @Pathvariable注解绑定它传过来的值到方法的参数上。

@Controller 
@RequestMapping("/owners/{ownerId}") 
public class RelativePathUriTemplateController { 
 
  @RequestMapping("/pets/{petId}") 
  public void findPet(@PathVariable String ownerId,@PathVariable String petId, Model model) {     
    // implementation omitted 
  } 
} 

　　

@Controller  
@RequestMapping("/owners/{ownerId}")  
public class RelativePathUriTemplateController {  
  
  @RequestMapping("/pets/{petId}")  
  public void findPet(@PathVariable String ownerId, @PathVariable String petId, Model model) {      
    // implementation omitted  
  }  
}  

　　上面代码把URI template 中变量 ownerId的值和petId的值，绑定到方法的参数上。若方法参数名称和需要绑定的uri template中变量名称不一致，需要在@PathVariable("name")指定uri template中的名称。如果一样，则可以省略。

@RequestMapping(value = "/forwardEdit/{id}.do")
	public String forwardEdit(HttpServletRequest request, @PathVariable("id") int id, String pf) throws Exception {
		// 采购方编码
		TJzny_plan fmodel = jzny_planService.find(id);
		AjaxMsg message = fmodel == null ? new AjaxMsg(false, "修改的计划单不存在！") : new AjaxMsg(true, "");
		LogonInfo userInfo = this.getUserInfo(request);
		TDepartment department = departmentService.find(Integer.parseInt(fmodel.getBusinessDep()));
		String businessDepId_value = "";
		if (department != null) {
			businessDepId_value = department.getDeptName();
		}
			
		request.setAttribute("businessDepId_value", businessDepId_value);
		request.setAttribute("userInfo", userInfo);
		request.setAttribute("fmodel", fmodel);// 将结果返回给前台，前台可以通过EL表达式来获取数据
		request.setAttribute("AjaxMsg", message);
		request.setAttribute("pf", pf);
		request.setAttribute("url", "planmanage/forwardGrid.do");
		request.setAttribute("purchaseTypes", StringUtils.isNotBlank(userInfo.getUserInfo().getDvSpecifyPurchaseTypes()) ? userInfo.getUserInfo().getDvSpecifyPurchaseTypes() : "0");
		
		// 判断是否需要判断物资编码
		String ishasWzCode = "否";
		List<TDictionarydata> dictionarydatas = DictorySearchService.find("WzCodeControl", userInfo.getPurchaserNo());
		if (dictionarydatas != null && dictionarydatas.size() > 0) {
			ishasWzCode = dictionarydatas.get(0) != null ? dictionarydatas.get(0).getDicValue() : "否";
		}
		request.setAttribute("ishasWzCode", ishasWzCode);
		return "jh/bid_planmanage/edit";
	}