Spring MVC 中采用注解方式 Action中跳转到另一个Action的写法

@RequestMapping(params = "action=delete") 
public String delete(@RequestParam("type") 
int type, @RequestParam("url") 
String url) { 

Map<String, Object> policy = null; 
if (type == 0) { 
if (logger.isDebugEnabled()) { 
logger.debug("删除访问策略"); 
} 
policy = this.visitorProxyManager.getVisitorPolicies("policy"); 
policy.remove(url); 
if (logger.isDebugEnabled()) { 
logger.debug("删除访问策略成功"); 
} 
return "redirect:/console/visitorPolicyList.do?action=list&type=0"; 
} else { 
if (logger.isDebugEnabled()) { 
logger.debug("删除session访问策略"); 
} 
policy = this.visitorProxyManager 
.getVisitorPolicies("sessionPolicy"); 
policy.remove(url); 
if (logger.isDebugEnabled()) { 
logger.debug("删除session访问策略成功"); 
} 
return "redirect:/console/visitorPolicyList.do?action=list&type=1"; 
} 

}