在SpringMVC中，bean中定义了Date，double等类型，如果没有做任何处理的话，日期以及double都无法绑定。
解决的办法就是使用spring mvc提供的@InitBinder标签。
在我的项目中是在BaseController中增加方法initBinder，并使用注解@InitBinder标注，那么spring mvc在绑定表单之前，都会先注册这些编辑器，当然你如果不嫌麻烦，你也可以单独的写在你的每一个controller中。剩下的控制器都继承该类。spring自己提供了大量的实现类，诸如CustomDateEditor ，CustomBooleanEditor，CustomNumberEditor等许多，基本上够用。
当然，我们也可以不使用他自己自带这些编辑器类，下面我们自己去构造几个。
import org.springframework.beans.propertyeditors.PropertiesEditor;
public class DoubleEditor extends PropertiesEditor {
@Override
public void setAsText(String text) throws IllegalArgumentException {
if (text == null || text.equals("")) {
text = "0";
}
setValue(Double.parseDouble(text));
}
@Override
public String getAsText() {
return getValue().toString();
}
}
import org.springframework.beans.propertyeditors.PropertiesEditor;
public class IntegerEditor extends PropertiesEditor {
@Override
public void setAsText(String text) throws IllegalArgumentException {
if (text == null || text.equals("")) {
text = "0";
}
setValue(Integer.parseInt(text));
}
@Override
public String getAsText() {
return getValue().toString();
}
}
import org.springframework.beans.propertyeditors.PropertiesEditor;
public class FloatEditor extends PropertiesEditor {
@Override
public void setAsText(String text) throws IllegalArgumentException {
if (text == null || text.equals("")) {
text = "0";
}
setValue(Float.parseFloat(text));
}
@Override
public String getAsText() {
return getValue().toString();
}
}
import org.springframework.beans.propertyeditors.PropertiesEditor;
public class LongEditor extends PropertiesEditor {
@Override
public void setAsText(String text) throws IllegalArgumentException {
if (text == null || text.equals("")) {
text = "0";
}
setValue(Long.parseLong(text));
}
@Override
public String getAsText() {
return getValue().toString();
}
}
import java.beans.PropertyEditorSupport;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.util.StringUtils;
public class CustomDateEditorWapper extends PropertyEditorSupport {
private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private final boolean allowEmpty;
/**
* 是否允许为空
* @param allowEmpty
*/
public CustomDateEditorWapper(boolean allowEmpty) {
this.allowEmpty = allowEmpty;
}
/**
* 根据格式绑定数据
*/
public void setAsText(String text) throws IllegalArgumentException {
if (this.allowEmpty && !StringUtils.hasText(text)) {
setValue(null);
} else if (text.indexOf("1") == 0 && text.length() == 13 && text.indexOf("-") < 0) {
//日期传Long的转换
setValue(new Date(Long.parseLong(text)));
} else {
setValue(DateUtils.parseTime(text));
}
}
public String getAsText() {
Date value = (Date) getValue();
return (value != null ? this.dateFormat.format(value) : "");
}
}
在BaseController中。
@InitBinder
protected final void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception {
// 在这里注册自定义的PropertyEditor
// binder.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"), true));
binder.registerCustomEditor(java.util.Date.class, new CustomDateEditorWapper(true));
// binder.registerCustomEditor(int.class, new CustomNumberEditor(int.class, true));
binder.registerCustomEditor(int.class, new IntegerEditor());
binder.registerCustomEditor(long.class, new LongEditor());
binder.registerCustomEditor(double.class, new DoubleEditor());
binder.registerCustomEditor(float.class, new FloatEditor());
}
@InitBinder
public void initBinder(WebDataBinder binder) {
// 设置List的最大长度
binder.setAutoGrowCollectionLimit(5000);
}
看到这里的CustomDateEditorWapper没？编辑器类直接继承PropertyEditorSupport也可以的。
附上日志处理的工具类DateUtils：
import java.text.ParseException;
import java.text.SimpleDateFormat;
/**
* 日期工具类
*/
public class DateUtils {
private static java.util.Date formatDate(String split, String date, SimpleDateFormat df, int length)
throws ParseException {
String formatStr = "yyyy-MM-dd";
if (length == 5) {
if (date.indexOf(split) == length - 1) {// 2008-
formatStr = "yyyy";
date = date.substring(0, 4);
} else {
formatStr = "yyyy-MM";// 2008-01
}
} else if (length >= 6 && length <= 7) {// 2008-1 -- 2008-01
formatStr = "yyyy-MM";
} else if (length >= 8 && length <= 9) {
if (date.lastIndexOf(split) == length - 1) { // 2008-12-
formatStr = "yyyy-MM";
date = date.substring(0, length - 1);
} else {
formatStr = "yyyy-MM-dd";// 2008-1-1 -- 2008-01-01
}
} else if (length >= 10 && length <= 11) {
if (date.indexOf(" ") > -1 && date.indexOf(" ") < length - 1) {
formatStr = "yyyy-MM-dd HH";// 2008-1-1 1 --
} else {
formatStr = "yyyy-MM-dd";// "2008-01-01"中间无空格
}
} else if (length >= 12 && length <= 13) {
if (date.indexOf(":") > -1 && date.indexOf(":") < length - 1) {
formatStr = "yyyy-MM-dd HH:mm";// 2008-1-1 1:1 --
// 2008-1-1 1:01
} else {
formatStr = "yyyy-MM-dd HH";// 2008-01-01 01 中间有空格
}
} else if (length >= 14 && length <= 16) {
int lastIndex = date.lastIndexOf(":");
if (date.indexOf(":") > -1 && lastIndex < length - 1 && date.indexOf(":") != lastIndex) {
formatStr = "yyyy-MM-dd HH:mm:ss";// 2008-1-1 1:1:1
// -- 2008-01-01
// 1:1:1 中间有两个冒号
if (lastIndex < length - 1 - 2) {
date = date.substring(0, lastIndex + 3);
}
} else if (date.indexOf(":") > -1 && lastIndex < length - 1 && date.indexOf(":") == lastIndex) {
formatStr = "yyyy-MM-dd HH:mm";// 2008-01-01 1:1 --
// 2008-01-01
// 01:01中间只有一个冒号
} else if (date.indexOf(":") > -1 && lastIndex == length - 1 && date.indexOf(":") == lastIndex) {
formatStr = "yyyy-MM-dd HH";// 2008-01-01 01:
// 只有一个冒号在末尾
date = date.substring(0, length - 1);
}
} else if (length == 17) {
int lastIndex = date.lastIndexOf(":");
if (lastIndex < length - 1) {
formatStr = "yyyy-MM-dd HH:mm:ss";// 2008-1-1 1:1:1
// -- 2008-01-01
// 1:1:1 中间有两个冒号
if (lastIndex < length - 1 - 2) {
date = date.substring(0, lastIndex + 3);
}
} else if (lastIndex == length - 1) {
formatStr = "yyyy-MM-dd HH:mm";// 2008-01-01 1:1 --
// 2008-01-01
// 01:01中间只有一个冒号
date = date.substring(0, length - 1);
}
} else if (length >= 18) {
formatStr = "yyyy-MM-dd HH:mm:ss";// 2008-1-1 1:1:1 --
// 2008-01-01
// 01:01:01 有两个冒号
int lastIndex = date.lastIndexOf(":");
if (lastIndex < length - 1 - 2) {
date = date.substring(0, lastIndex + 3);
}
}
formatStr = formatStr.replace("-", split);
df.applyPattern(formatStr);
return df.parse(date);
}
/**
* 将常用时间字符串转换为时间对象
* @param String
* @return java.util.Date
* @throws Exception
*/
public static java.util.Date parseTime(String date) throws Exception {
SimpleDateFormat df = new SimpleDateFormat();
java.util.Date rtnDate = null;
if (date == null || date.trim().equals("") || date.trim().equals("null"))
return rtnDate;
try {
date = date.trim();
int length = date.length();
if (date.indexOf("-") != -1) {
if (length == 5) {
if (date.indexOf("-") == length - 1) {//2008-
df.applyPattern("yyyy");
date = date.substring(0, 4);
rtnDate = df.parse(date);
} else {
df.applyPattern("yyyy-MM");//2008-01
rtnDate = df.parse(date);
}
} else if (length >= 6 && length <= 7) {//2008-1 -- 2008-01
df.applyPattern("yyyy-MM");
rtnDate = df.parse(date);
} else if (length >= 8 && length <= 9) {
if (date.lastIndexOf("-") == length - 1) { //2008-12-
df.applyPattern("yyyy-MM");
date = date.substring(0, length - 1);
rtnDate = df.parse(date);
} else {
df.applyPattern("yyyy-MM-dd");//2008-1-1 -- 2008-01-01
rtnDate = df.parse(date);
}
} else if (length >= 10 && length <= 11) {
if (date.indexOf(" ") > -1 && date.indexOf(" ") < length - 1) {
df.applyPattern("yyyy-MM-dd HH");//2008-1-1 1 -- 2008-1-1 11 中间有空格
rtnDate = df.parse(date);
} else {
df.applyPattern("yyyy-MM-dd");//"2008-01-01"中间无空格
rtnDate = df.parse(date);
}
} else if (length >= 12 && length <= 13) {
if (date.indexOf(":") > -1 && date.indexOf(":") < length - 1) {
df.applyPattern("yyyy-MM-dd HH:mm");//2008-1-1 1:1 -- 2008-1-1 1:01 中间有冒号
rtnDate = df.parse(date);
} else {
df.applyPattern("yyyy-MM-dd HH");//2008-01-01 01 中间有空格
rtnDate = df.parse(date);
}
} else if (length >= 14 && length <= 16) {
int lastIndex = date.lastIndexOf(":");
if (date.indexOf(":") > -1 && lastIndex < length - 1 && date.indexOf(":") != lastIndex) {
df.applyPattern("yyyy-MM-dd HH:mm:ss");//2008-1-1 1:1:1 -- 2008-01-01 1:1:1 中间有两个冒号
if (lastIndex < length - 1 - 2) {
date = date.substring(0, lastIndex + 3);
}
rtnDate = df.parse(date);
} else if (date.indexOf(":") > -1 && lastIndex < length - 1 && date.indexOf(":") == lastIndex) {
df.applyPattern("yyyy-MM-dd HH:mm");//2008-01-01 1:1 -- 2008-01-01 01:01中间只有一个冒号
rtnDate = df.parse(date);
} else if (date.indexOf(":") > -1 && lastIndex == length - 1 && date.indexOf(":") == lastIndex) {
df.applyPattern("yyyy-MM-dd HH");//2008-01-01 01: 只有一个冒号在末尾
date = date.substring(0, length - 1);
rtnDate = df.parse(date);
}
} else if (length == 17) {
int lastIndex = date.lastIndexOf(":");
if (lastIndex < length - 1) {
df.applyPattern("yyyy-MM-dd HH:mm:ss");//2008-1-1 1:1:1 -- 2008-01-01 1:1:1 中间有两个冒号
if (lastIndex < length - 1 - 2) {
date = date.substring(0, lastIndex + 3);
}
rtnDate = df.parse(date);
} else if (lastIndex == length - 1) {
df.applyPattern("yyyy-MM-dd HH:mm");//2008-01-01 1:1 -- 2008-01-01 01:01中间只有一个冒号
date = date.substring(0, length - 1);
rtnDate = df.parse(date);
}
} else if (length >= 18) {
df.applyPattern("yyyy-MM-dd HH:mm:ss");//2008-1-1 1:1:1 -- 2008-01-01 01:01:01 有两个冒号
int lastIndex = date.lastIndexOf(":");
if (lastIndex < length - 1 - 2) {
date = date.substring(0, lastIndex + 3);
}
rtnDate = df.parse(date);
}
//对时间格式中以/为分隔符的日期做处理
} else if (date.indexOf("/") != -1) {
rtnDate = formatDate("/", date, df, length);
} else if (length == 4) {
df.applyPattern("yyyy");
rtnDate = df.parse(date);
} else if (length >= 5 && length <= 6) {
df.applyPattern("yyyyMM");
rtnDate = df.parse(date);
} else if (length >= 7 && length <= 8) {
df.applyPattern("yyyyMMdd");
rtnDate = df.parse(date);
} else if (length >= 9 && length <= 10) {
df.applyPattern("yyyyMMddHH");
rtnDate = df.parse(date);
} else if (length >= 11 && length <= 12) {
df.applyPattern("yyyyMMddHHmm");
rtnDate = df.parse(date);
} else if (length >= 13 && length <= 14) {
df.applyPattern("yyyyMMddHHmmss");
rtnDate = df.parse(date);
} else if (length >= 15) {
df.applyPattern("yyyyMMddHHmmss");
date = date.substring(0, 14);
rtnDate = df.parse(date);
}
} catch (Exception ex) {
throw ex;
}
return rtnDate;
}
}