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Add lesson 12
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‎spring-boot/lesson-12/[海报] Spring Boot 系列之验证.png

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‎spring-boot/lesson-12/[课件] Spring Boot 系列之验证.pptx

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‎spring-boot/lesson-12/spring-boot-lesson-12/.gitignore

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

‎spring-boot/lesson-12/spring-boot-lesson-12/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.segmentfault</groupId>
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<artifactId>spring-boot-lesson-12</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>spring-boot-lesson-12</name>
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<description>Demo project for Spring Boot</description>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>1.5.6.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<!-- Apache Commons Validator -->
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<dependency>
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<groupId>commons-validator</groupId>
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<artifactId>commons-validator</artifactId>
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<version>1.6</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-actuator</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-validation</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎spring-boot/lesson-12/spring-boot-lesson-12/src/main/java/com/segmentfault/bean/validation/PersonNamePrefixConstraintValidator.java

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package com.segmentfault.bean.validation;
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import com.segmentfault.bean.validation.constraints.PersonNamePrefix;
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import org.springframework.util.StringUtils;
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import javax.validation.ConstraintValidator;
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import javax.validation.ConstraintValidatorContext;
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/**
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* {@link PersonNamePrefix} {@link ConstraintValidator}
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see PersonNamePrefix
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* @see ConstraintValidator
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* @since 2017.08.12
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*/
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public class PersonNamePrefixConstraintValidator implements ConstraintValidator<PersonNamePrefix, String> {
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private String prefix;
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@Override
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public void initialize(PersonNamePrefix constraintAnnotation) {
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this.prefix = constraintAnnotation.prefix();
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}
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@Override
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public boolean isValid(String name, ConstraintValidatorContext context) {
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if (!name.startsWith(prefix)) {
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context.disableDefaultConstraintViolation();
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ConstraintValidatorContext.ConstraintViolationBuilder builder =
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context.buildConstraintViolationWithTemplate("人的名称必须以\"" + prefix + "\"起始！");
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builder.addConstraintViolation();
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return false;
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}
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return true;
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}
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}

‎spring-boot/lesson-12/spring-boot-lesson-12/src/main/java/com/segmentfault/bean/validation/constraints/PersonNamePrefix.java

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package com.segmentfault.bean.validation.constraints;
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import com.segmentfault.bean.validation.PersonNamePrefixConstraintValidator;
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import javax.validation.Constraint;
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import javax.validation.Payload;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import static java.lang.annotation.ElementType.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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/**
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* 人的名称校验
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.12
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*/
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@Target({METHOD, FIELD})
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@Retention(RUNTIME)
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@Documented
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@Constraint(validatedBy = {PersonNamePrefixConstraintValidator.class})
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public @interface PersonNamePrefix {
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String message() default "{person.name.prefix.message}";
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Class<?>[] groups() default {};
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Class<? extends Payload>[] payload() default {};
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String prefix() default "sf-";
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}

‎spring-boot/lesson-12/spring-boot-lesson-12/src/main/java/com/segmentfault/controller/PersonController.java

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package com.segmentfault.controller;
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import com.segmentfault.domain.Person;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RestController;
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import javax.validation.Valid;
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/**
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* {@link Person} Controller
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.12
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*/
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@RestController
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public class PersonController {
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@PostMapping("/person/save")
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public Person save(@Valid @RequestBody Person person) {
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return person;
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}
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}

‎spring-boot/lesson-12/spring-boot-lesson-12/src/main/java/com/segmentfault/domain/Person.java

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package com.segmentfault.domain;
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import com.segmentfault.bean.validation.constraints.PersonNamePrefix;
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import javax.validation.Valid;
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import javax.validation.constraints.Max;
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import javax.validation.constraints.Min;
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import javax.validation.constraints.NotNull;
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/**
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* 人 领域对象
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.12
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*/
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public class Person {
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@NotNull
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@PersonNamePrefix(prefix = "segmentfault-")
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private String name;
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@Min(value = 0)
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@Max(value = 200
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, message = "{person.age.max.message}"
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)
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private int age;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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}

‎spring-boot/lesson-12/spring-boot-lesson-12/src/main/java/com/segmentfault/spring/validator/PersonValidator.java

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package com.segmentfault.spring.validator;
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import com.segmentfault.domain.Person;
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import org.springframework.util.StringUtils;
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import org.springframework.validation.Errors;
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import org.springframework.validation.Validator;
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/**
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* {@link Person} {@link Validator}
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see Person
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* @see Validator
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* @since 2017.08.12
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*/
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public class PersonValidator implements Validator {
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@Override
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public boolean supports(Class<?> clazz) {
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return Person.class.isAssignableFrom(clazz);
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}
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@Override
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public void validate(Object target, Errors errors) {
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Person person = Person.class.cast(target);
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String name = person.getName(); //名字需要校验
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if (!StringUtils.hasLength(name)) {
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errors.reject("person.name.not.null", "人的名字不能为空");
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}
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}
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}

‎spring-boot/lesson-12/spring-boot-lesson-12/src/main/java/com/segmentfault/springbootlesson12/ApacheCommonsValidatorMain.java

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package com.segmentfault.springbootlesson12;
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import org.apache.commons.validator.routines.IntegerValidator;
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import java.util.Locale;
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/**
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* Apache commons-validator Main
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.12
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*/
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public class ApacheCommonsValidatorMain {
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public static void main(String[] args) {
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IntegerValidator validator = IntegerValidator.getInstance();
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Integer value = validator.validate("10");
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System.out.println(value);
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value = validator.validate("A");
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System.out.println(value);
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System.out.println(validator.format(100000, Locale.ENGLISH));
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}
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}

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