目錄

• 作用
• 主要功能函數
• • addAttribute
  • • 函數作用
    • 用法舉例

作用

用于數據的存儲、傳遞

主要功能函數

public interface Model {/*** Add the supplied attribute under the supplied name.* @param attributeName the name of the model attribute (never {@code null})* @param attributeValue the model attribute value (can be {@code null})*/Model addAttribute(String attributeName, @Nullable Object attributeValue);/*** Add the supplied attribute to this {@code Map} using a* {@link org.springframework.core.Conventions#getVariableName generated name}.* <p><i>Note: Empty {@link java.util.Collection Collections} are not added to* the model when using this method because we cannot correctly determine* the true convention name. View code should check for {@code null} rather* than for empty collections as is already done by JSTL tags.</i>* @param attributeValue the model attribute value (never {@code null})*/Model addAttribute(Object attributeValue);/*** Copy all attributes in the supplied {@code Collection} into this* {@code Map}, using attribute name generation for each element.* @see #addAttribute(Object)*/Model addAllAttributes(Collection<?> attributeValues);/*** Copy all attributes in the supplied {@code Map} into this {@code Map}.* @see #addAttribute(String, Object)*/Model addAllAttributes(Map<String, ?> attributes);/*** Copy all attributes in the supplied {@code Map} into this {@code Map},* with existing objects of the same name taking precedence (i.e. not getting* replaced).*/Model mergeAttributes(Map<String, ?> attributes);/*** Does this model contain an attribute of the given name?* @param attributeName the name of the model attribute (never {@code null})* @return whether this model contains a corresponding attribute*/boolean containsAttribute(String attributeName);/*** Return the attribute value for the given name, if any.* @param attributeName the name of the model attribute (never {@code null})* @return the corresponding attribute value, or {@code null} if none* @since 5.2*/@NullableObject getAttribute(String attributeName);/*** Return the current set of model attributes as a Map.*/Map<String, Object> asMap();}

addAttribute

函數作用

addAttribute函數在提供的名稱下添加提供的屬性。也即是說，在創建一個類變量后，可以通過這個類變量提供屬性，并且該屬性由屬性名attributeName和屬性值attributeName構成。

用法舉例

@GetMapping("test")public void test(Model model){model.addAttribute("msg","hello,Thymeleaf");}

在resources/templates下的html中使用數據

<div th:text="${msg}"></div>

總結

以上是生活随笔為你收集整理的Model类的作用的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。