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SpringBoot非官方教程 | 第二十篇：处理表单提交

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创建工程

涉及了 web，加上spring-boot-starter-web和spring-boot-starter-thymeleaf的起步依赖。

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
            </dependency>

    </dependencies>

创建实体

代码清单如下：

public class Greeting {    
private long id;    
private String content;    
public long getId() {        
return id;
    }    public void setId(long id) {        
    this.id = id;
    }    
    public String getContent() 
    {        
    return content;
    }    public void setContent(String content) 
    {        
    this.content = content;
    }

}

创建Controller

@Controllerpublic class GreetingController {

    @GetMapping("/greeting")    
    public String greetingForm(Model model) {
        model.addAttribute("greeting", new Greeting());        
        return "greeting";
    }    @PostMapping("/greeting")    
    public String greetingSubmit(@ModelAttribute Greeting greeting) {        
    return "result";
    }

}

页面展示层

src/main/resources/templates/greeting.html

<!DOCTYPE HTML><html xmlns:th="http://www.thymeleaf.org"><head>
    <title>Getting Started: Handling Form Submission</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body>
    <h1>Form</h1>
    <form action="#" th:action="@{/greeting}" th:object="${greeting}" method="post">
        <p>Id: <input type="text" th:field="*{id}" /></p>
        <p>Message: <input type="text" th:field="*{content}" /></p>
        <p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
    </form></body></html>

src/main/resources/templates/result.html

<!DOCTYPE HTML><html xmlns:th="http://www.thymeleaf.org"><head>
    <title>Getting Started: Handling Form Submission</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body>
    <h1>Result</h1>
    <p th:text="'id: ' + ${greeting.id}" />
    <p th:text="'content: ' + ${greeting.content}" />
    <a href="/greeting">Submit another message</a></body></html>

启动工程，访问ttp://localhost:8080/greeting: