struts2自定义验证器(身份证验证)
struts2的验证器是用的xwork里面的验证，自定义验证器就是根据源码继承已有的字段验证器而来。具体步骤如下:1.展开xwork-2.0.4.jar，com.opensymphony.xwork2.validator.validators目录下有个default.xml,将它复制到项目根目录下改名叫validators.xml。
验证框架首先在根目录下找validators.xml文件,没找到validators.xml文件，验证框架将调用默认的验证设置,即default.xml里面的配置信息.
4.新建一个类(身份证验证为例:类名CardIdFieldValidator)继承FieldValidatorSupport，实现validate方法。
<div style="border-right: #cccccc 1px solid; padding-right: 5px; border-top: #cccccc 1px solid; padding-left: 4px; font-size: 13px; padding-bottom: 4px; border-left: #cccccc 1px solid; width: 98%; padding-top: 4px; border-bottom: #cccccc 1px solid; background-color: #eeeeee;">http://www.blogjava.net/Images/OutliningIndicators/None.gifpackage org.siyn.commons.validators;
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http://www.blogjava.net/Images/OutliningIndicators/None.gifimport com.opensymphony.xwork2.validator.ValidationException;
http://www.blogjava.net/Images/OutliningIndicators/None.gifimport com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;
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http://www.blogjava.net/Images/OutliningIndicators/None.gifpublic class CardIdFieldValidator extends FieldValidatorSupport
http://www.blogjava.net/Images/OutliningIndicators/ExpandedBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedBlock.gifhttp://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif public void validate(Object object) throws ValidationException
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif // 获得字段的名字
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String fieldName = getFieldName();
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif // 获得输入界面输入的值
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String value = getFieldValue(fieldName, object).toString();
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http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif if (value == null || value.length() <= 0)
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif return;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif if(value.length()!=15 && value.length()!=18 )//身份证必须是15或18位!
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif addFieldError(fieldName, object);
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif if(value.length()==15)
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif validate15CardId(value, object);
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif if(value.length()==18)
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif validate18CardId(value, object);
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif /** *//**
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * <p>18位身份证验证</p>
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif *
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 根据〖中华人民共和国国家标准 GB 11643-1999〗中有关公民身份号码的规定，公民身份号码是特征组合码，由十七位数字本体码和一位数字校验码组成。
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 排列顺序从左至右依次为：六位数字地址码，八位数字出生日期码，三位数字顺序码和一位数字校验码。
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif *
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 第十八位数字(校验码)的计算方法为：
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 1.将前面的身份证号码17位数分别乘以不同的系数。从第一位到第十七位的系数分别为：7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 2.将这17位数字和系数相乘的结果相加。
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 3.用加出来和除以11，看余数是多少？
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 4.余数只可能有0 1 2 3 4 5 6 7 8 9 10这11个数字。其分别对应的最后一位身份证的号码为1 0 X 9 8 7 6 5 4 3 2。
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 5.通过上面得知如果余数是2，就会在身份证的第18位数字上出现罗马数字的Ⅹ。如果余数是10，身份证的最后一位号码就是2。
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif *
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * @date Oct 18, 2008
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * @param value
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * @param object
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif public void validate18CardId(String value, Object object)
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif // 获得字段的名字
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String fieldName = getFieldName();
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String tempStr = value.substring(0,17);
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String sourceCheckCode = value.substring(17,18);
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String checkCode = "";
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif int[] a = new int[17];
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif int i = 0;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif try
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif while(i<17)http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif a = Integer.parseInt(tempStr.substring(i,i+1));
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif i++;
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif } catch (NumberFormatException e)
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif addFieldError(fieldName, object);
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif int mod = (a[0]*7+a[1]*9+a[2]*10+a[3]*5+a[4]*8+a[5]*4+a[6]*2+a[7]*1+a[8]*6+a[9]*3+a[10]*7
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif +a[11]*9+a[12]*10+a[13]*5+a[14]*8+a[15]*4+a[16]*2)%11;
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif switch (mod)http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 10: checkCode = "2"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 9: checkCode = "3"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 8: checkCode = "4"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 7: checkCode = "5"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 6: checkCode = "6"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 5: checkCode = "7"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 4: checkCode = "8"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 3: checkCode = "9"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 2: checkCode = "x"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 1: checkCode = "0"; break;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif case 0: checkCode = "1"; break;
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif if(!sourceCheckCode.equalsIgnoreCase(checkCode))
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif addFieldError(fieldName, object);
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif /** *//**
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * <p>15位身份证验证</p>
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif *
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * 只做了数字验证
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * @date Oct 18, 2008
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * @param value
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif * @param object
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif public void validate15CardId(String value, Object object)
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif String fieldName = getFieldName();
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif int i = 0;
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif try
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif while(i<15)http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif if(!Character.isDigit(value.charAt(i)))
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif addFieldError(fieldName, object);
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif i++;
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif } catch (NumberFormatException e)
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/Images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/Images/OutliningIndicators/InBlock.gif addFieldError(fieldName, object);
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/Images/OutliningIndicators/ExpandedBlockEnd.gif}
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