Servlet取A标签传递的中文参数乱码
重写request对象
public class CustomHttpServletRequest extends HttpServletRequestWrapper {
?protected Logger logger = Logger.getLogger(CustomHttpServletRequest.class);
?private static final String ENCODED = "UTF-8", DECODE = "ISO8859-1";
?public CustomHttpServletRequest(HttpServletRequest request) {
??super(request);
?}
?@Override
?public String getQueryString() {
??String queryString = super.getQueryString();
??if (queryString != null) {
???try {
????return new String(queryString.getBytes(DECODE), ENCODED);
???} catch (UnsupportedEncodingException e) {
????logger.info(e.getMessage(), e);
???}
??}
??return queryString;
?}
?@Override
?public String getParameter(String name) {
??String value = super.getParameter(name);
??if (value != null) {
???try {
????return new String(value.getBytes(DECODE), ENCODED);
???} catch (UnsupportedEncodingException e) {
????logger.info(e.getMessage(), e);
???}
??}
??return value;
?}
?@SuppressWarnings("unchecked")
?@Override
?public Map getParameterMap() {
??Map<String, String[]> values = super.getParameterMap();
??Map<String, String[]> valuesMap = new HashMap<String, String[]>();
??Set<String> names = values.keySet();
??for (Iterator<String> iter = names.iterator(); iter.hasNext();) {
???String name = iter.next();
???String[] v = values.get(name);
???if (v != null) {
????String[] valuesCopy = new String[v.length];
????for (int i = 0; i < v.length; i++) {
?????try {
??????valuesCopy[i] = new String(v[i].getBytes(DECODE),
????????ENCODED);
?????} catch (UnsupportedEncodingException e) {
??????logger.info(e.getMessage(), e);
?????}
????}
????valuesMap.put(name, valuesCopy);// 向新Map放入转码过的值
???}
??}
??return valuesMap;// 返回是副本
?}
?@Override
?public String[] getParameterValues(String name) {
??String[] values = super.getParameterValues(name);
??if (values != null) {
???String[] valuesCopy = new String[values.length];// 原数组是只读的，不能修改
???for (int i = 0; i < values.length; i++) {
????try {
?????valuesCopy[i] = new String(values[i].getBytes(DECODE),
???????ENCODED);
????} catch (UnsupportedEncodingException e) {
?????logger.info(e.getMessage(), e);
????}
???}
???return valuesCopy;
??}
??return values;
?}
}
?
servlet里使用
H2WHttpServletRequest request = new H2WHttpServletRequest(req);
