解决fastjson反序列化日期0000-00-00失败的方案

// DateBeanDemo.java
public class DateBeanDemo {
	/**
	 * dateStr field with Date.class
	 */
    private Date dateStr;
<span class="cm">/**
 * Get dateStr &lt;br&gt;
 *
 * @return Returns the dateStr. &lt;br&gt;
 */</span>
<span class="kd">public</span> <span class="n">Date</span> <span class="nf">getDateStr</span><span class="o">()</span> <span class="o">{</span>
    <span class="k">return</span> <span class="n">dateStr</span><span class="o">;</span>
<span class="o">}</span>

<span class="cm">/**
 * Set dateStr &lt;br&gt;
 *
 * @param dateStr The dateStr to set. &lt;br&gt;
 */</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setDateStr</span><span class="o">(</span><span class="n">Date</span> <span class="n">dateStr</span><span class="o">)</span> <span class="o">{</span>
    <span class="k">this</span><span class="o">.</span><span class="na">dateStr</span> <span class="o">=</span> <span class="n">dateStr</span><span class="o">;</span>
<span class="o">}</span>

}

// 示例执行例子
public class TestDemo {
    public static String jsonStr = "{"dateStr":"0000-00-00"}";
    public static void main(String[] args) {
        DateBeanDemo resultObject = JSON.parseObject(TestDemo.jsonStr, DateBeanDemo.class);
    }
}

@JSONField(format = "yyyy-MM-dd",parseFeatures={Feature.AllowISO8601DateFormat})
private Date dateStr;

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
public @interface JSONField {
    int ordinal() default 0;
    String name() default "";
    String format() default "";
    boolean serialize() default true;
    boolean deserialize() default true; // 默认定义了true，反序列化之时也使用该注解
    SerializerFeature[] serialzeFeatures() default {};
    Feature[] parseFeatures() default {};
    String label() default "";
}

// 检查格式是否符合ISO8601的DateFormat规范
if(!dateLexer.scanISO8601DateIfMatch(false)) {
    break label122;
}

// 示例执行例子
public class TestDemo {
    public static String jsonStr = "{"dateStr":"0000-00-00"}";
    public static void main(String[] args) {
        JSON.DEFFAULT_DATE_FORMAT = "yyyy-MM-dd";
        DateBeanDemo resultObject = JSON.parseObject(TestDemo.jsonStr, DateBeanDemo.class);
    }
}

package jeromechan.fixbug.fastjson;
import com.alibaba.fastjson.parser.DefaultJSONParser;

import com.alibaba.fastjson.parser.deserializer.DateDeserializer;

import java.lang.reflect.Type;
/**


Copyright © 2016 Jerome Chan. All rights reserved.


An extended DateDeseializer for parsing '0000-00-00'.



@author chenjinlong


@CreateDate 7/20/16 5:55 PM

*/

public class JCDateDeserializer extends DateDeserializer {

public static final JCDateDeserializer instance = new JCDateDeserializer();
public JCDateDeserializer() {

}
protected <T> T cast(DefaultJSONParser parser, Type clazz, Object fieldName, Object val)

{

if (val  null) {

return null;

} else if (val instanceof String) {

String strVal = (String) val;

if (strVal.length()  0) {

return null;

} else if (strVal.equals("0000-00-00")) {

parser.setDateFormat("yyyy-MM-dd");

}

}

return super.cast(parser, clazz, fieldName, val);

}

}

// 示例执行例子
public class TestDemo {
    public static String jsonStr = "{"dateStr":"0000-00-00"}";
    public static void main(String[] args) {        
        ParserConfig jcParserConfig = new ParserConfig();
        jcParserConfig.putDeserializer(Date.class, JCDateDeserializer.instance);
        DateBeanDemo resultObject = JSON.parseObject(TestDemo.jsonStr, DateBeanDemo.class, jcParserConfig, JSON.DEFAULT_PARSER_FEATURE);
    }
}