java去左右的空格(包括全角空格，tab，回车等)

import com.google.common.base.CharMatcher;

/**
 * @author yangzhilong
 * @date 6/25/2019
 */
public class TrimUtils {
    /**
     * trim left and right char to "",chars like tab/chinese space/enter/english space
     * @return
     */
    public static String trimAnyBlank(String str) {
        if(null != str) {
            return CharMatcher.anyOf("\r\n\t \u00A0　").trimFrom(str);
        }
        return str;
    }
}

import static org.junit.Assert.assertEquals;

import org.junit.Test;

/**
 * @author yangzhilong
 * @date 6/25/2019
 */
public class TrimUtilsTest {
    
    @Test
    public void testTrim() {
        // 左右各有全角状态下的空格
        String str = " 　xfd　　";
        int length = TrimUtils.trimAnyBlank(str).length();
        assertEquals(length, 3);
    }
}