demo-validation

demo-validation/.gitignore

@@ -0,0 +1,25 @@
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/

demo-validation/pom.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <parent>
+    <artifactId>spring-boot-demo</artifactId>
+    <groupId>com.xkcoding</groupId>
+    <version>1.0.0-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>demo-validation</artifactId>
+
+  <properties>
+    <maven.compiler.source>8</maven.compiler.source>
+    <maven.compiler.target>8</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-validation</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-thymeleaf</artifactId>
+    </dependency>
+    <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>
+  </dependencies>
+
+  <build>
+    <finalName>demo-validation</finalName>
+    <plugins>
+      <plugin>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-maven-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

demo-validation/src/main/java/com/xkcoding/validation/SpringBootDemoValidation.java

@@ -0,0 +1,20 @@
+package com.xkcoding.validation;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * <p>
+ * 启动类
+ * </p>
+ *
+ * @author zhenghui
+ * @date 2021/3/15 13:19
+ */
+@SpringBootApplication
+public class SpringBootDemoValidation {
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootDemoValidation.class, args);
+    }
+
+}

demo-validation/src/main/java/com/xkcoding/validation/entity/PersonForm.java

@@ -0,0 +1,43 @@
+package com.xkcoding.validation.entity;
+
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+/**
+ * <p>
+ * PersonForm实体类
+ * </p>
+ *
+ * @author zhenghui
+ * @date 2021/3/15 13:28
+ */
+public class PersonForm {
+    @NotNull
+    @Size(min=2, max=30)
+    private String name;
+
+    @NotNull
+    @Min(18)
+    private Integer age;
+
+    public String getName() {
+        return this.name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getAge() {
+        return age;
+    }
+
+    public void setAge(Integer age) {
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return "Person(Name: " + this.name + ", Age: " + this.age + ")";
+    }
+}

demo-validation/src/main/java/com/xkcoding/validation/ontroller/WebController.java

@@ -0,0 +1,42 @@
+package com.xkcoding.validation.ontroller;
+
+import javax.validation.Valid;
+
+import com.xkcoding.validation.entity.PersonForm;
+import org.springframework.stereotype.Controller;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+/**
+ * <p>
+ * 控制器
+ * </p>
+ *
+ * @author zhenghui
+ * @date 2021/3/15 13:31
+ */
+@Controller
+public class WebController implements WebMvcConfigurer {
+
+    @Override
+    public void addViewControllers(ViewControllerRegistry registry) {
+        registry.addViewController("/results").setViewName("results");
+    }
+
+    @GetMapping("/")
+    public String showForm(PersonForm personForm) {
+        return "form";
+    }
+
+    @PostMapping("/")
+    public String checkPersonInfo(@Valid PersonForm personForm, BindingResult bindingResult) {
+
+        if (bindingResult.hasErrors()) {
+            return "form";
+        }
+
+        return "redirect:/results";
+    }
+}

demo-validation/src/main/resources/templates/form.html

@@ -0,0 +1,22 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<body>
+<form action="#" th:action="@{/}" th:object="${personForm}" method="post">
+  <table>
+    <tr>
+      <td>Name:</td>
+      <td><input type="text" th:field="*{name}" /></td>
+      <td th:if="${#fields.hasErrors('name')}" th:errors="*{name}">Name Error</td>
+    </tr>
+    <tr>
+      <td>Age:</td>
+      <td><input type="text" th:field="*{age}" /></td>
+      <td th:if="${#fields.hasErrors('age')}" th:errors="*{age}">Age Error</td>
+    </tr>
+    <tr>
+      <td><button type="submit">Submit</button></td>
+    </tr>
+  </table>
+</form>
+</body>
+</html>

demo-validation/src/main/resources/templates/results.html

@@ -0,0 +1,5 @@
+<html>
+<body>
+Congratulations! You are old enough to sign up for this site.
+</body>
+</html>

pom.xml

@@ -71,6 +71,7 @@
     <module>demo-flyway</module>
     <module>demo-pay</module>
     <module>demo-nacos</module>
+    <module>demo-validation</module>
   </modules>
   <packaging>pom</packaging>