--no commit message

app/sysuser/src/main/java/com/zrqx/sysuser/bg/service/aboutus/AboutUsColumnService.java

@@ -5,4 +5,10 @@ import com.zrqx.sysuser.commons.model.aboutus.AboutUsColumn;
 
 public interface AboutUsColumnService extends BaseService<AboutUsColumn, Integer>{
 
+	/**
+	 * 获取最大排序号
+	 * @return
+	 */
+	Integer selectMax();
+
 }

app/sysuser/src/main/java/com/zrqx/sysuser/bg/service/aboutus/AboutUsColumnServiceImpl.java

 package com.zrqx.sysuser.bg.service.aboutus;
 
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import com.zrqx.core.mapper.BaseMapper;
 import com.zrqx.core.service.BaseServiceImpl;
+import com.zrqx.core.util.datatype.ArrayUtils;
 import com.zrqx.sysuser.bg.mapper.aboutus.AboutUsColumnMapper;
 import com.zrqx.sysuser.commons.model.aboutus.AboutUsColumn;
+import com.zrqx.sysuser.commons.model.propaganda.PropagandaColumn;
 @Service
 public class AboutUsColumnServiceImpl extends BaseServiceImpl<AboutUsColumn, Integer> implements AboutUsColumnService{
 
@@ -17,5 +23,16 @@ public class AboutUsColumnServiceImpl extends BaseServiceImpl<AboutUsColumn, Int
 	public BaseMapper<AboutUsColumn> getMapper() {
 		return mapper;
 	}
+	
+	@Override
+	public Integer selectMax() {
+		List<AboutUsColumn> list = mapper.selectAll();
+		if (ArrayUtils.isNotEmpty(list)) {
+			List<AboutUsColumn> list2 = list.stream().sorted(Comparator.comparing(AboutUsColumn :: getSort, Comparator.reverseOrder())).collect(Collectors.toList());
+			Integer sort = list2.get(0).getSort();
+			return sort;
+		}
+		return 0;
+	}
 
 }