SpringBoot http请求 提交日期参数 转换失败的解决方法 （无法自动转换字符串到日期）
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找梯子最重要的就是稳定，这个已经上线三年了，一直稳定没有被封过，赶紧下载备用吧！
如果你有类似如下报错信息,可阅读此文尝试解决:
2018-08-18 14:05:17.687 WARN 17100 --- [p-nio-80-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved exception caused by Handler execution: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 4 errors Field error in object 'sysUserDO' on field 'userBecomeTime': rejected value []; codes [typeMismatch.sysUserDO.userBecomeTime,typeMismatch.userBecomeTime,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysUserDO.userBecomeTime,userBecomeTime]; arguments []; default message [userBecomeTime]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'userBecomeTime'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.util.Date] for value ''; nested exception is java.lang.IllegalArgumentException] Field error in object 'sysUserDO' on field 'userBirthday': rejected value []; codes [typeMismatch.sysUserDO.userBirthday,typeMismatch.userBirthday,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysUserDO.userBirthday,userBirthday]; arguments []; default message [userBirthday]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'userBirthday'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.util.Date] for value ''; nested exception is java.lang.IllegalArgumentException] Field error in object 'sysUserDO' on field 'userDimissionTime': rejected value []; codes [typeMismatch.sysUserDO.userDimissionTime,typeMismatch.userDimissionTime,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysUserDO.userDimissionTime,userDimissionTime]; arguments []; default message [userDimissionTime]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'userDimissionTime'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.util.Date] for value ''; nested exception is java.lang.IllegalArgumentException] Field error in object 'sysUserDO' on field 'userJoinTime': rejected value []; codes [typeMismatch.sysUserDO.userJoinTime,typeMismatch.userJoinTime,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [sysUserDO.userJoinTime,userJoinTime]; arguments []; default message [userJoinTime]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'userJoinTime'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.util.Date] for value ''; nested exception is java.lang.IllegalArgumentException]
前台像后台传递参数带日期是,springboot自动绑定会失败
比如:
前台代码:
后台接收代码:
报错信息:
下面给出解决方法:
1.创建一个class 名称:StringToDateConverter 稍后会用到此类
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.convert.converter.Converter;
import java.text.SimpleDateFormat;
import java.util.Date;
public class StringToDateConverter implements Converter<String, Date> {
private static final String dateFormat = "yyyy-MM-dd HH:mm:ss";
private static final String shortDateFormat = "yyyy-MM-dd";
private static final String dateFormat2 = "yyyy/MM/dd HH:mm:ss";
private static final String shortDateFormat2 = "yyyy/MM/dd";
@Override
public Date convert(String source) {
if (StringUtils.isBlank(source)) {
return null;
}
source = source.trim();
try {
SimpleDateFormat formatter;
if (source.contains("-")) {
if (source.contains(":")) {
formatter = new SimpleDateFormat(dateFormat);
} else {
formatter = new SimpleDateFormat(shortDateFormat);
}
Date dtDate = formatter.parse(source);
return dtDate;
} else if (source.contains("/")) {
if (source.contains(":")) {
formatter = new SimpleDateFormat(dateFormat2);
} else {
formatter = new SimpleDateFormat(shortDateFormat2);
}
Date dtDate = formatter.parse(source);
return dtDate;
}
} catch (Exception e) {
throw new RuntimeException(String.format("parser %s to Date fail", source));
}
throw new RuntimeException(String.format("parser %s to Date fail", source));
}
}其中StringUtils为apache lang3包,可以自己手写替代,或导包
<!--apache lang3-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>
2.添加配置类,把我们写的处理日期的类交给spring,让它知道怎么处理
import com.here.hulk.utils.StringToDateConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.support.GenericConversionService;
import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;
import javax.annotation.PostConstruct;
@Configuration
public class WebAppConfig {
@Autowired
private RequestMappingHandlerAdapter handlerAdapter;
/**
* 此方法解决前台提交的日期参数绑定不正确问题,将自己实现的StringToDateConverter交给spring,让其知道如何进行处理
*/
@PostConstruct //@PostContruct是spring框架的注解，在方法上加该注解会在项目启动的时候执行该方法，也可以理解为在spring容器初始化的时候执行该方法。
public void initEditableValidation() {
ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) handlerAdapter.getWebBindingInitializer();
if (initializer.getConversionService() != null) {
GenericConversionService genericConversionService = (GenericConversionService) initializer.getConversionService();
genericConversionService.addConverter(new StringToDateConverter());
}
}
}3.重启测试,有问题继续想办法,总是能解决的
