增加公共工具CommonService, 使用乐观锁，用于生成全局唯一ID

src/main/java/com/egolm/sso/config/XRException.java

+package com.egolm.sso.config;
+
+public class XRException extends RuntimeException {
+
+	private static final long serialVersionUID = 1L;
+	
+    public XRException(String msg) {
+		super(msg);
+	}
+	
+	public XRException(String msg, Throwable e) {
+		super(msg, e);
+	}
+	
+	public XRException(String msg, int code) {
+		super(msg);
+	}
+	
+	public XRException(String msg, int code, Throwable e) {
+		super(msg, e);
+	}
+
+	public static void assertNotBlank(String message, Object... objs) {
+		for(Object obj : objs) {
+			if(obj == null || obj.toString().trim().equals("")) {
+				throw new XRException((message == null || message.trim().equals("")) ? "对象不能为空" : message);
+			}
+		}
+	}
+	
+}

src/main/java/com/egolm/sso/service/CommonService.java

+package com.egolm.sso.service;
+
+public interface CommonService {
+
+	public Long getNextval(String sName);
+	
+}

src/main/java/com/egolm/sso/service/impl/CommonServiceImpl.java

+package com.egolm.sso.service.impl;
+
+import java.text.MessageFormat;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.EmptyResultDataAccessException;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Service;
+
+import com.egolm.sso.config.XRException;
+import com.egolm.sso.service.CommonService;
+
+@Service
+public class CommonServiceImpl implements CommonService {
+	
+	@Autowired
+	private JdbcTemplate jdbcTemplate;
+
+	public Long getNextval(String sName) {
+		try {
+			Map<String, Object> seqMap = jdbcTemplate.queryForMap("select * from sequence where name = ?", sName);
+			Integer id = (Integer)seqMap.get("id");
+			Long step = (Long)seqMap.get("step");
+			Long max = (Long)seqMap.get("max");
+			Long min = (Long)seqMap.get("min");
+			Long value = (Long)seqMap.get("value");
+			Long nextValue = value + step;
+			
+			if(value > max || value < min) {
+				throw new XRException(MessageFormat.format("序列已超出许可范围[{0}]", sName));
+			} else {
+				String sql = "update sequence set value = ? where id = ? and value < ?";
+				int count = jdbcTemplate.update(sql, nextValue, id, nextValue);
+				if(count == 1) {
+					return value;
+				} else if(count == 0) {
+					return this.getNextval(sName);
+				} else {
+					throw new XRException(MessageFormat.format("序列错误[{0}]", sName));
+				}
+			}
+		} catch (EmptyResultDataAccessException e) {
+			String sql = "insert into sequence (name, max, min, step, value) values (?, ?, ?, ?, ?)";
+			jdbcTemplate.update(sql, sName, Long.MAX_VALUE, 1L, 1L, 1L);
+			return this.getNextval(sName);
+		}
+	}
+	
+}

src/main/java/com/egolm/sso/service/impl/MaterialMasterServiceImpl.java

@@ -6,6 +6,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.stereotype.Component;
 
+import com.egolm.sso.service.CommonService;
 import com.egolm.sso.service.MaterialMasterService;
 
 @Component
@@ -15,8 +16,12 @@ public class MaterialMasterServiceImpl implements MaterialMasterService {
 	@Autowired
 	JdbcTemplate jdbcTemplate;
 	
+	@Autowired
+	CommonService common;
+	
 	@Override
 	public void execute(String xml) {
+		System.out.println(common.getNextval("Test"));
 		System.out.println(xml);
 	}