前台发送:
param=1,2
后台接收:
@RequestParam(value = "param") String[] param
@RequestParam(value = "param") List<String> param
public static String reflectionToString(Object o){
if(o == null) return StringUtils.EMPTY;
StringBuilder toStr = new StringBuilder();
if(o instanceof Collection){
Iterator it = ((Collection) o).iterator();
while (it.hasNext()){
toStr.append(reflectionToString(it.next()));
toStr.append("\n");
}
}else if(o instanceof Map){
Iterator<Map.Entry> mit = ((Map) o).entrySet().iterator();
while (mit.hasNext()){
Map.Entry entry = mit.next();
String kv = entry.getKey() + ": " + reflectionToString(entry.getValue());
toStr.append(kv);
toStr.append(" ");
}
} else if(o instanceof Object[]){
for (Object temp: (Object[])o){
toStr.append(reflectionToString(temp));
}
}else if(o instanceof String){
toStr.append(o);
} else {
toStr.append(ToStringBuilder.reflectionToString(o, ToStringStyle.SHORT_PREFIX_STYLE));
}
return toStr.toString();
}
package xxx.business.utils;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.configuration.reloading.FileChangedReloadingStrategy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by windwant on 2016/7/19.
*/
public class ConfigUtils {
private static final Logger logger = LoggerFactory.getLogger(ConfigUtils.class);
private static PropertiesConfiguration config = null;
static {
try {
if (config == null) {
config = new PropertiesConfiguration("config.properties");
//自动重新加载
config.setReloadingStrategy(new FileChangedReloadingStrategy());
//自动保存
config.setAutoSave(true);
}
} catch (ConfigurationException e) {
logger.error("load config.properties error", e);
throw new RuntimeException(e);
}
}
private ConfigUtils(){}
public static String get(String key) {
if (config != null) {
String value = config.getString(key);
return value == null ? "" : value;
}
return "";
}
public static Integer getInteger(String key) {
int result = -1;
if (config != null) {
try {
result = Integer.parseInt(config.getString(key));
} catch (NumberFormatException e) {
result = -1;
}
}
return result;
}
}