SpringBoot08 请求方式、参数获取注解、参数验证、前后台属性名不一致问题、自定义参数验证注解、BeanUtils的使用

@GetMapping(value = "/{id}")
    public ResultViewModel findGirlById(
            @PathVariable("id") String id
    ) {
        // 01 参数去空格
        id = StringUtils.trim(id);

        // 02 判断参数是否全为数字
        Integer girlId = 0;
        if (JudgeUtil.allIsNumber(id)) {
            girlId = Integer.parseInt(id);
        } else {
            throw new GirlException(GirlEnum.PARAM_NOT_ALL_NUMBER);
        }

        // 03 调用服务层获取数据
        return ResultViewModelUtil.success(girlService.findGirlById(girlId));
    }

@PutMapping
    public ResultViewModel updateOneGirl(
            @Valid @RequestBody GirlFormModel girlFormModel,
            BindingResult result
            ) {
        // 01 参数验证
        if (result.hasErrors()) {
            // 0101 存储错误信息的字符串变量
            StringBuffer msgBuffer = new StringBuffer();
            // 0102 错误字段集合
            List<FieldError> fieldErrors = result.getFieldErrors();
            for (FieldError fieldError : fieldErrors) {
                // 0103 获取错误信息
                msgBuffer.append(fieldError.getField() + ":" + fieldError.getDefaultMessage());
            }
            // 0104 抛出错误信息
            throw new GirlException(GirlEnum.PARAM_ERROR.getCode(), msgBuffer.toString());
        }

        // 02 将表单对象转化成数据对象
        GirlModel girlModel = new GirlModel();
        BeanUtils.copyProperties(girlFormModel, girlModel);

        // 03 调用服务层进行更新操作
        Boolean updateResult = girlService.updateGirl(girlModel);
        if (updateResult) {
            return ResultViewModelUtil.success(GirlEnum.UPDATE_SUCCESS.getMessage());
        } else {
            return ResultViewModelUtil.error(GirlEnum.UPDATE_ERROR.getCode(), GirlEnum.UPDATE_ERROR.getMessage());
        }
    }

package cn.xiangxu.springboottest.model.dataFormModel;


import cn.xiangxu.springboottest.commons.validators.GirlFormIdValidator;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;
import org.hibernate.validator.constraints.NotBlank;
import org.hibernate.validator.constraints.NotEmpty;

import javax.validation.constraints.Min;

@Data
public class GirlFormModel {

//    @NotBlank(message = "目标girl的ID不能为空")
//    @NotEmpty(message = "目标girl的ID不能为空哟")
//    @GirlFormIdValidator
    private Integer girlId;



    @Min(value = 123)
    private Integer age;

    private String name;

    private String password;

    @NotEmpty(message = "昵称不能为空")
    @NotBlank(message = "昵称不能为空哟")
    @JsonProperty("nick") //  当前端属性为nick后台接收对象的属性为nickName时可以用@JsonProperty来保持一致
    private String nickname;

    @NotEmpty(message = "地址不能为空")
    @NotBlank(message = "地址不能为空哟")
    private String address;
}

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package org.springframework.validation;

import java.beans.PropertyEditor;
import java.util.Map;
import org.springframework.beans.PropertyEditorRegistry;

public interface BindingResult extends Errors {
    String MODEL_KEY_PREFIX = BindingResult.class.getName() + ".";

    Object getTarget();

    Map<String, Object> getModel();

    Object getRawFieldValue(String var1);

    PropertyEditor findEditor(String var1, Class<?> var2);

    PropertyEditorRegistry getPropertyEditorRegistry();

    void addError(ObjectError var1);

    String[] resolveMessageCodes(String var1);

    String[] resolveMessageCodes(String var1, String var2);

    void recordSuppressedField(String var1);

    String[] getSuppressedFields();
}

package cn.xiangxu.springboottest.commons.validators;

import cn.xiangxu.springboottest.commons.validators.validatorClass.GirlFormValidatorClass;

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.PARAMETER, ElementType.FIELD})
@Constraint(validatedBy = GirlFormValidatorClass.class)
public @interface GirlFormIdValidator {
    String values();
    String message() default "girl的ID必须为纯数字";

    Class<?>[] groups() default {};
    Class<? extends Payload>[]  payload() default {};

}

package cn.xiangxu.springboottest.commons.validators.validatorClass;

import cn.xiangxu.springboottest.commons.validators.GirlFormIdValidator;
import cn.xiangxu.springboottest.utils.JudgeUtil;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

public class GirlFormValidatorClass implements ConstraintValidator<GirlFormIdValidator, Object> {

    private String values;

    @Override
    public void initialize(GirlFormIdValidator girlFormValidator) {
        this.values = girlFormValidator.values();
    }

    @Override
    public boolean isValid(Object value, ConstraintValidatorContext constraintValidatorContext) {
        if (JudgeUtil.allIsNumber((String)value)) {
            return true;
        }
        return false;
    }
}

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package org.springframework.beans;

import java.beans.PropertyDescriptor;
import java.beans.PropertyEditor;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URI;
import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.MethodParameter;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.ConcurrentReferenceHashMap;
import org.springframework.util.ReflectionUtils;
import org.springframework.util.StringUtils;

public abstract class BeanUtils {
    private static final Log logger = LogFactory.getLog(BeanUtils.class);
    private static final Set<Class<?>> unknownEditorTypes = Collections.newSetFromMap(new ConcurrentReferenceHashMap(64));

    public BeanUtils() {
    }

    public static <T> T instantiate(Class<T> clazz) throws BeanInstantiationException {
        Assert.notNull(clazz, "Class must not be null");
        if (clazz.isInterface()) {
            throw new BeanInstantiationException(clazz, "Specified class is an interface");
        } else {
            try {
                return clazz.newInstance();
            } catch (InstantiationException var2) {
                throw new BeanInstantiationException(clazz, "Is it an abstract class?", var2);
            } catch (IllegalAccessException var3) {
                throw new BeanInstantiationException(clazz, "Is the constructor accessible?", var3);
            }
        }
    }

    public static <T> T instantiateClass(Class<T> clazz) throws BeanInstantiationException {
        Assert.notNull(clazz, "Class must not be null");
        if (clazz.isInterface()) {
            throw new BeanInstantiationException(clazz, "Specified class is an interface");
        } else {
            try {
                return instantiateClass(clazz.getDeclaredConstructor());
            } catch (NoSuchMethodException var2) {
                throw new BeanInstantiationException(clazz, "No default constructor found", var2);
            }
        }
    }

    public static <T> T instantiateClass(Class<?> clazz, Class<T> assignableTo) throws BeanInstantiationException {
        Assert.isAssignable(assignableTo, clazz);
        return instantiateClass(clazz);
    }

    public static <T> T instantiateClass(Constructor<T> ctor, Object... args) throws BeanInstantiationException {
        Assert.notNull(ctor, "Constructor must not be null");

        try {
            ReflectionUtils.makeAccessible(ctor);
            return ctor.newInstance(args);
        } catch (InstantiationException var3) {
            throw new BeanInstantiationException(ctor, "Is it an abstract class?", var3);
        } catch (IllegalAccessException var4) {
            throw new BeanInstantiationException(ctor, "Is the constructor accessible?", var4);
        } catch (IllegalArgumentException var5) {
            throw new BeanInstantiationException(ctor, "Illegal arguments for constructor", var5);
        } catch (InvocationTargetException var6) {
            throw new BeanInstantiationException(ctor, "Constructor threw exception", var6.getTargetException());
        }
    }

    public static Method findMethod(Class<?> clazz, String methodName, Class... paramTypes) {
        try {
            return clazz.getMethod(methodName, paramTypes);
        } catch (NoSuchMethodException var4) {
            return findDeclaredMethod(clazz, methodName, paramTypes);
        }
    }

    public static Method findDeclaredMethod(Class<?> clazz, String methodName, Class... paramTypes) {
        try {
            return clazz.getDeclaredMethod(methodName, paramTypes);
        } catch (NoSuchMethodException var4) {
            return clazz.getSuperclass() != null ? findDeclaredMethod(clazz.getSuperclass(), methodName, paramTypes) : null;
        }
    }

    public static Method findMethodWithMinimalParameters(Class<?> clazz, String methodName) throws IllegalArgumentException {
        Method targetMethod = findMethodWithMinimalParameters(clazz.getMethods(), methodName);
        if (targetMethod == null) {
            targetMethod = findDeclaredMethodWithMinimalParameters(clazz, methodName);
        }

        return targetMethod;
    }

    public static Method findDeclaredMethodWithMinimalParameters(Class<?> clazz, String methodName) throws IllegalArgumentException {
        Method targetMethod = findMethodWithMinimalParameters(clazz.getDeclaredMethods(), methodName);
        if (targetMethod == null && clazz.getSuperclass() != null) {
            targetMethod = findDeclaredMethodWithMinimalParameters(clazz.getSuperclass(), methodName);
        }

        return targetMethod;
    }

    public static Method findMethodWithMinimalParameters(Method[] methods, String methodName) throws IllegalArgumentException {
        Method targetMethod = null;
        int numMethodsFoundWithCurrentMinimumArgs = 0;
        Method[] var4 = methods;
        int var5 = methods.length;

        for(int var6 = 0; var6 < var5; ++var6) {
            Method method = var4[var6];
            if (method.getName().equals(methodName)) {
                int numParams = method.getParameterTypes().length;
                if (targetMethod != null && numParams >= targetMethod.getParameterTypes().length) {
                    if (!method.isBridge() && targetMethod.getParameterTypes().length == numParams) {
                        if (targetMethod.isBridge()) {
                            targetMethod = method;
                        } else {
                            ++numMethodsFoundWithCurrentMinimumArgs;
                        }
                    }
                } else {
                    targetMethod = method;
                    numMethodsFoundWithCurrentMinimumArgs = 1;
                }
            }
        }

        if (numMethodsFoundWithCurrentMinimumArgs > 1) {
            throw new IllegalArgumentException("Cannot resolve method ‘" + methodName + "‘ to a unique method. Attempted to resolve to overloaded method with the least number of parameters but there were " + numMethodsFoundWithCurrentMinimumArgs + " candidates.");
        } else {
            return targetMethod;
        }
    }

    public static Method resolveSignature(String signature, Class<?> clazz) {
        Assert.hasText(signature, "‘signature‘ must not be empty");
        Assert.notNull(clazz, "Class must not be null");
        int firstParen = signature.indexOf("(");
        int lastParen = signature.indexOf(")");
        if (firstParen > -1 && lastParen == -1) {
            throw new IllegalArgumentException("Invalid method signature ‘" + signature + "‘: expected closing ‘)‘ for args list");
        } else if (lastParen > -1 && firstParen == -1) {
            throw new IllegalArgumentException("Invalid method signature ‘" + signature + "‘: expected opening ‘(‘ for args list");
        } else if (firstParen == -1 && lastParen == -1) {
            return findMethodWithMinimalParameters(clazz, signature);
        } else {
            String methodName = signature.substring(0, firstParen);
            String[] parameterTypeNames = StringUtils.commaDelimitedListToStringArray(signature.substring(firstParen + 1, lastParen));
            Class<?>[] parameterTypes = new Class[parameterTypeNames.length];

            for(int i = 0; i < parameterTypeNames.length; ++i) {
                String parameterTypeName = parameterTypeNames[i].trim();

                try {
                    parameterTypes[i] = ClassUtils.forName(parameterTypeName, clazz.getClassLoader());
                } catch (Throwable var10) {
                    throw new IllegalArgumentException("Invalid method signature: unable to resolve type [" + parameterTypeName + "] for argument " + i + ". Root cause: " + var10);
                }
            }

            return findMethod(clazz, methodName, parameterTypes);
        }
    }

    public static PropertyDescriptor[] getPropertyDescriptors(Class<?> clazz) throws BeansException {
        CachedIntrospectionResults cr = CachedIntrospectionResults.forClass(clazz);
        return cr.getPropertyDescriptors();
    }

    public static PropertyDescriptor getPropertyDescriptor(Class<?> clazz, String propertyName) throws BeansException {
        CachedIntrospectionResults cr = CachedIntrospectionResults.forClass(clazz);
        return cr.getPropertyDescriptor(propertyName);
    }

    public static PropertyDescriptor findPropertyForMethod(Method method) throws BeansException {
        return findPropertyForMethod(method, method.getDeclaringClass());
    }

    public static PropertyDescriptor findPropertyForMethod(Method method, Class<?> clazz) throws BeansException {
        Assert.notNull(method, "Method must not be null");
        PropertyDescriptor[] pds = getPropertyDescriptors(clazz);
        PropertyDescriptor[] var3 = pds;
        int var4 = pds.length;

        for(int var5 = 0; var5 < var4; ++var5) {
            PropertyDescriptor pd = var3[var5];
            if (method.equals(pd.getReadMethod()) || method.equals(pd.getWriteMethod())) {
                return pd;
            }
        }

        return null;
    }

    public static PropertyEditor findEditorByConvention(Class<?> targetType) {
        if (targetType != null && !targetType.isArray() && !unknownEditorTypes.contains(targetType)) {
            ClassLoader cl = targetType.getClassLoader();
            if (cl == null) {
                try {
                    cl = ClassLoader.getSystemClassLoader();
                    if (cl == null) {
                        return null;
                    }
                } catch (Throwable var5) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Could not access system ClassLoader: " + var5);
                    }

                    return null;
                }
            }

            String editorName = targetType.getName() + "Editor";

            try {
                Class<?> editorClass = cl.loadClass(editorName);
                if (!PropertyEditor.class.isAssignableFrom(editorClass)) {
                    if (logger.isWarnEnabled()) {
                        logger.warn("Editor class [" + editorName + "] does not implement [java.beans.PropertyEditor] interface");
                    }

                    unknownEditorTypes.add(targetType);
                    return null;
                } else {
                    return (PropertyEditor)instantiateClass(editorClass);
                }
            } catch (ClassNotFoundException var4) {
                if (logger.isDebugEnabled()) {
                    logger.debug("No property editor [" + editorName + "] found for type " + targetType.getName() + " according to ‘Editor‘ suffix convention");
                }

                unknownEditorTypes.add(targetType);
                return null;
            }
        } else {
            return null;
        }
    }

    public static Class<?> findPropertyType(String propertyName, Class... beanClasses) {
        if (beanClasses != null) {
            Class[] var2 = beanClasses;
            int var3 = beanClasses.length;

            for(int var4 = 0; var4 < var3; ++var4) {
                Class<?> beanClass = var2[var4];
                PropertyDescriptor pd = getPropertyDescriptor(beanClass, propertyName);
                if (pd != null) {
                    return pd.getPropertyType();
                }
            }
        }

        return Object.class;
    }

    public static MethodParameter getWriteMethodParameter(PropertyDescriptor pd) {
        return pd instanceof GenericTypeAwarePropertyDescriptor ? new MethodParameter(((GenericTypeAwarePropertyDescriptor)pd).getWriteMethodParameter()) : new MethodParameter(pd.getWriteMethod(), 0);
    }

    public static boolean isSimpleProperty(Class<?> clazz) {
        Assert.notNull(clazz, "Class must not be null");
        return isSimpleValueType(clazz) || clazz.isArray() && isSimpleValueType(clazz.getComponentType());
    }

    public static boolean isSimpleValueType(Class<?> clazz) {
        return ClassUtils.isPrimitiveOrWrapper(clazz) || clazz.isEnum() || CharSequence.class.isAssignableFrom(clazz) || Number.class.isAssignableFrom(clazz) || Date.class.isAssignableFrom(clazz) || URI.class == clazz || URL.class == clazz || Locale.class == clazz || Class.class == clazz;
    }

    public static void copyProperties(Object source, Object target) throws BeansException {
        copyProperties(source, target, (Class)null, (String[])null);
    }

    public static void copyProperties(Object source, Object target, Class<?> editable) throws BeansException {
        copyProperties(source, target, editable, (String[])null);
    }

    public static void copyProperties(Object source, Object target, String... ignoreProperties) throws BeansException {
        copyProperties(source, target, (Class)null, ignoreProperties);
    }

    private static void copyProperties(Object source, Object target, Class<?> editable, String... ignoreProperties) throws BeansException {
        Assert.notNull(source, "Source must not be null");
        Assert.notNull(target, "Target must not be null");
        Class<?> actualEditable = target.getClass();
        if (editable != null) {
            if (!editable.isInstance(target)) {
                throw new IllegalArgumentException("Target class [" + target.getClass().getName() + "] not assignable to Editable class [" + editable.getName() + "]");
            }

            actualEditable = editable;
        }

        PropertyDescriptor[] targetPds = getPropertyDescriptors(actualEditable);
        List<String> ignoreList = ignoreProperties != null ? Arrays.asList(ignoreProperties) : null;
        PropertyDescriptor[] var7 = targetPds;
        int var8 = targetPds.length;

        for(int var9 = 0; var9 < var8; ++var9) {
            PropertyDescriptor targetPd = var7[var9];
            Method writeMethod = targetPd.getWriteMethod();
            if (writeMethod != null && (ignoreList == null || !ignoreList.contains(targetPd.getName()))) {
                PropertyDescriptor sourcePd = getPropertyDescriptor(source.getClass(), targetPd.getName());
                if (sourcePd != null) {
                    Method readMethod = sourcePd.getReadMethod();
                    if (readMethod != null && ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType())) {
                        try {
                            if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
                                readMethod.setAccessible(true);
                            }

                            Object value = readMethod.invoke(source);
                            if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {
                                writeMethod.setAccessible(true);
                            }

                            writeMethod.invoke(target, value);
                        } catch (Throwable var15) {
                            throw new FatalBeanException("Could not copy property ‘" + targetPd.getName() + "‘ from source to target", var15);
                        }
                    }
                }
            }
        }

    }
}