Spring MVC在接收集合請求參數時,需要在Controller方法的集合參數裡前添加@RequestBody,而@RequestBody預設接收的enctype (MIME編碼)是application/json,因此發送POST請求時需要設定請求報文頭訊息,否則Spring MVC在解析集合請求參數時不會自動的轉換成JSON資料再解析成對應的集合。
以下列舉接收Listf7e83be87db5cd2d9a8a0b8117b38cd4、List4c8e0c17c3bd7e0081bb17cc795e1984、Lista06c5c2dfccfdea21bf0b155d9343663>、User[]、User(bean裡麵包含List)幾種較為複雜的集合參數範例:
接收Listf7e83be87db5cd2d9a8a0b8117b38cd4集合參數:
1、頁面js程式碼:
var idList = new Array(); idList.push(“1”); idList.push(“2”); idList.push(“3”); var isBatch = false; $.ajax({ type: "POST", url: "<%=path%>/catalog.do?fn=deleteCatalogSchemes", dataType: 'json', data: {"idList":idList,"isBatch":isBatch}, success: function(data){ … }, error: function(res){ … } });
2、Controller方法:
@Controller @RequestMapping("/catalog.do") public class CatalogController { @RequestMapping(params = "fn=deleteCatalogSchemes") @ResponseBody public AjaxJson deleteCatalogSchemes(@RequestParam("idList[]") Listf7e83be87db5cd2d9a8a0b8117b38cd4 idList,Boolean isBatch) { … } }
#接收List< ;User>、User[]集合參數:
1、User實體類別:
public class User { private String name; private String pwd; //省略getter/setter }
2、頁面js程式碼:
var userList = new Array(); userList.push({name: "李四",pwd: "123"}); userList.push({name: "张三",pwd: "332"}); $.ajax({ type: "POST", url: "<%=path%>/catalog.do?fn=saveUsers", data: JSON.stringify(userList),//将对象序列化成JSON字符串 dataType:"json", contentType : 'application/json;charset=utf-8', //设置请求头信息 success: function(data){ … }, error: function(res){ … } });
3、Controller方法:
@Controller @RequestMapping("/catalog.do") public class CatalogController { @RequestMapping(params = "fn=saveUsers") @ResponseBody public AjaxJson saveUsers(@RequestBody List<User> userList) { … } }
如果想要接收User[]數組,只需要把saveUsers的參數類型改為@RequestBody User[] userArray就行了。
接收Lista06c5c2dfccfdea21bf0b155d9343663>集合參數:
1、頁面js程式碼(不需要User物件了):
var userList = new Array(); userList.push({name: "李四",pwd: "123"}); userList.push({name: "张三",pwd: "332"}); $.ajax({ type: "POST", url: "<%=path%>/catalog.do?fn=saveUsers", data: JSON.stringify(userList),//将对象序列化成JSON字符串 dataType:"json", contentType : 'application/json;charset=utf-8', //设置请求头信息 success: function(data){ … }, error: function(res){ … } });
2、Controller方法:
@Controller @RequestMapping("/catalog.do") public class CatalogController { @RequestMapping(params = "fn=saveUsers") @ResponseBody public AjaxJson saveUsers(@RequestBody Lista06c5c2dfccfdea21bf0b155d9343663> listMap) { … } }
接收User(bean裡麵包含List)集合參數:
1、User實體類別:
public class User { private String name; private String pwd; private List<User> customers;//属于用户的客户群 //省略getter/setter }
2、頁面js程式碼:
var customerArray = new Array(); customerArray.push({name: "李四",pwd: "123"}); customerArray.push({name: "张三",pwd: "332"}); var user = {}; user.name = "李刚"; user.pwd = "888"; user. customers = customerArray; $.ajax({ type: "POST", url: "<%=path%>/catalog.do?fn=saveUsers", data: JSON.stringify(user),//将对象序列化成JSON字符串 dataType:"json", contentType : 'application/json;charset=utf-8', //设置请求头信息 success: function(data){ … }, error: function(res){ … } });
3、Controller方法:
@Controller @RequestMapping("/catalog.do") public class CatalogController { @RequestMapping(params = "fn=saveUsers") @ResponseBody public AjaxJson saveUsers(@RequestBody User user) { List<User> customers = user.getCustomers(); … } }
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