JSF backing bean的转换和验证

1.转换和验证会有默认的错误信息，在sun的实现中没有中文的文件，但apache的Myfaces中有相关的messages文件。在Myfaces-impl.jar的 javax.faces包中。

更改标准的错误信息，需要在faces-config.xml中增加：

<application>
<message-bundle>com.corejsf.messages</message-bundle>
</application>

来指定使用的信息文件。

文件清单：

# Copyright 2004 The Apache Software Foundation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# standard messages (Spec. 2.5.1.4)

javax.faces.component.UIInput.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.component.UIInput.CONVERSION_detail = "{0}": /u8f6c/u6362/u65f6/u53d1/u751f/u9519/u8bef.

javax.faces.component.UIInput.REQUIRED = /u9a8c/u8bc1/u9519/u8bef
javax.faces.component.UIInput.REQUIRED_detail = "{0}": /u8be5/u503c/u5fc5/u987b/u586b/u5199.

javax.faces.component.UISelectOne.INVALID = /u9a8c/u8bc1/u9519/u8bef
javax.faces.component.UISelectOne.INVALID_detail = "{0}": /u975e/u6cd5/u9009/u9879.

javax.faces.component.UISelectMany.INVALID = /u9a8c/u8bc1/u9519/u8bef
javax.faces.component.UISelectMany.INVALID_detail = "{0}": /u975e/u6cd5/u9009/u9879.

javax.faces.validator.NOT_IN_RANGE = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.NOT_IN_RANGE_detail = "{2}": /u8be5/u503c/u4e0d/u5728/u5141/u8bb8/u7684 {0} /u81f3 {1} /u5305/u56f4/u5185.

javax.faces.validator.DoubleRangeValidator.LIMIT = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.DoubleRangeValidator.LIMIT_detail = /u65e0/u6cd5/u5c06/u8be5/u5c5e/u6027/u8f6c/u6362/u6210/u5408/u9002/u7684/u7c7b/u578b.

javax.faces.validator.DoubleRangeValidator.MAXIMUM = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.DoubleRangeValidator.MAXIMUM_detail = "{1}": /u8be5/u503c/u5927/u4e8e/u5141/u8bb8/u7684/u6700/u5927/u503c ''{0}''.

javax.faces.validator.DoubleRangeValidator.MINIMUM = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.DoubleRangeValidator.MINIMUM_detail = "{1}": /u8be5/u503c/u5c0f/u4e8e/u5141/u8bb8/u7684/u6700/u5c0f/u503c ''{0}''.

javax.faces.validator.DoubleRangeValidator.TYPE = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.DoubleRangeValidator.TYPE_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5141/u8bb8/u7684/u7c7b/u578b.

javax.faces.validator.LengthValidator.LIMIT = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LengthValidator.LIMIT_detail = /u65e0/u6cd5/u5c06/u8be5/u5c5e/u6027/u8f6c/u6362/u6210/u5408/u9002/u7684/u7c7b/u578b.

javax.faces.validator.LengthValidator.MAXIMUM = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LengthValidator.MAXIMUM_detail = "{1}": /u8be5/u503c/u957f/u5ea6/u5927/u4e8e/u5141/u8bb8/u6700/u5927/u503c {0} .

javax.faces.validator.LengthValidator.MINIMUM = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LengthValidator.MINIMUM_detail = "{1}": /u8be5/u503c/u957f/u5ea6/u5c0f/u4e8e/u5141/u8bb8/u6700/u5c0f/u503c {0} .

javax.faces.validator.LongRangeValidator.LIMIT = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LongRangeValidator.LIMIT_detail = /u65e0/u6cd5/u5c06/u8be5/u5c5e/u6027/u8f6c/u6362/u6210/u5408/u9002/u7684/u7c7b/u578b.

javax.faces.validator.LongRangeValidator.MAXIMUM = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LongRangeValidator.MAXIMUM_detail = "{1}": /u8be5/u503c/u5927/u4e8e/u5141/u8bb8/u7684/u6700/u5927/u503c ''{0}''.

javax.faces.validator.LongRangeValidator.MINIMUM = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LongRangeValidator.MINIMUM_detail = "{1}": /u8be5/u503c/u5c0f/u4e8e/u5141/u8bb8/u7684/u6700/u5c0f/u503c ''{0}''.

javax.faces.validator.LongRangeValidator.TYPE = /u9a8c/u8bc1/u9519/u8bef
javax.faces.validator.LongRangeValidator.TYPE_detail = "{0}": /u8be5/u503c/u7c7b/u578b/u4e0d/u6b63/u786e.

# additional messages (not specified, but supported by myfaces API converters)

javax.faces.convert.BigDecimalConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.BigDecimalConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.BigIntegerConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.BigIntegerConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.BooleanConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.BooleanConverter.CONVERSION_detail = "{1}": /u65e0/u6cd5/u5c06 '{0}' /u8f6c/u6362/u6210/u5e03/u5c14/u503c.

javax.faces.convert.ByteConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.ByteConverter.CONVERSION_detail = "{1}": /u65e0/u6cd5/u5c06 '{0}' /u8f6c/u6362/u6210/u6574/u6570/u503c.

javax.faces.convert.CharacterConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.CharacterConverter.CONVERSION_detail = "{1}": /u65e0/u6cd5/u5c06 '{0}' /u8f6c/u6362/u6210/u5b57/u7b26.

javax.faces.convert.DateTimeConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.DateTimeConverter.CONVERSION_detail = "{1}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u65e5/u671f//u65f6/u95f4/u503c.

javax.faces.convert.DoubleConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.DoubleConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.FloatConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.FloatConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.IntegerConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.IntegerConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.LongConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.LongConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.NumberConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.NumberConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

javax.faces.convert.ShortConverter.CONVERSION = /u8f6c/u6362/u9519/u8bef
javax.faces.convert.ShortConverter.CONVERSION_detail = "{0}": /u8be5/u503c/u4e0d/u662f/u5408/u6cd5/u7684/u6570/u503c.

# myfaces specific messages

org.apache.myfaces.renderkit.html.HtmlMessagesRenderer.IN_FIELD = /u5728/u57df {0} /u4e2d
org.apache.myfaces.Email.INVALID = /u9a8c/u8bc1/u9519/u8bef
org.apache.myfaces.Email.INVALID_detail = /u6240/u7ed9/u51fa/u7684/u503c ({0}) /u4e0d/u662f/u5408/u6cd5/u7535/u5b50/u90ae/u4ef6/u5730/u5740.

org.apache.myfaces.Equal.INVALID = /u9a8c/u8bc1/u9519/u8bef
org.apache.myfaces.Equal.INVALID_detail = /u6240/u7ed9/u51fa/u7684/u503c ({0}) /u4e0e/u503c "{1}" /u4e0d/u76f8/u7b49.

org.apache.myfaces.Creditcard.INVALID = /u9a8c/u8bc1/u9519/u8bef
org.apache.myfaces.Creditcard.INVALID_detail = /u6240/u7ed9/u51fa/u7684/u503c ({0}) /u4e0d/u662f/u5408/u6cd5/u4fe1/u7528/u5361/u5361/u53f7.

org.apache.myfaces.Regexpr.INVALID = /u9a8c/u8bc1/u9519/u8bef
org.apache.myfaces.Regexpr.INVALID_detail = /u6240/u7ed9/u51fa/u7684/u503c ({0}) /u4e0d/u5408/u6cd5.

org.apache.myfaces.Date.INVALID = /u9a8c/u8bc1/u9519/u8bef
org.apache.myfaces.Date.INVALID_detail = /u6240/u7ed9/u51fa/u7684/u503c ({0}) /u4e0d/u662f/u5408/u6cd5/u65e5/u671f.

org.apache.myfaces.ticker.NOCONNECTION = /u65e0/u6cd5/u8fde/u63a5:
org.apache.myfaces.ticker.NOCONNECTION_detail = /u8bf7/u68c0/u67e5/u9632/u706b/u5899/u8bbe/u7f6e?

org.apache.myfaces.ISBN.INVALID = /u9a8c/u8bc1/u9519/u8bef
org.apache.myfaces.ISBN.INVALID_detail = /u6240/u7ed9/u51fa/u7684/u503c ({0}) /u4e0d/u662f/u5408/u6cd5/u7684ISBN/u4ee3/u7801.

2.自定义Converter 的三种方法

.1.在faces-config.xml中声明

<converter>
<converter-id>mycoverter</converter-id>
<converter-class>com.corejsf.Myconverter</converter-class>
</converter>
在页面中使用 <f:converter converterId="mycoverter"/>

2.在backing 中指转换器类 加方法 getConvert（）

public Converter getConvert() {
return new Converter() {

public Object getAsObject(FacesContext arg0, UIComponent arg1,
String arg2) {
// TODO Auto-generated method stub
return null;
}

public String getAsString(FacesContext arg0, UIComponent arg1,
Object arg2) {
// TODO Auto-generated method stub
return null;
}
};

在页面中使用<h:inputText id="name" converter="#{xxx.convert}">

3. 为backing bean指定默认的转换器

在faces-config.xml中指定 <converter>

<converter-for-class>com.Jianshe</converter-for-class>
<converter-class>com.corejsf.Myconverter</converter-class>
</converter>

在页面中指定一个类为<h:inputText id="name" value="#{xx.jianshe}"> 时会自动执行转换。