Improve dead lock servlet 2

Author: k-tamura

pom.xml

@@ -60,7 +60,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>5.1.17</version>
+      <version>5.1.25</version>
     </dependency>
     <dependency>
         <groupId>org.slf4j</groupId>
@@ -169,15 +169,15 @@
         <artifactId>exec-maven-plugin</artifactId>
         <version>1.2</version>
         <!-- Comment out Payara sections to avoid proxy error due to slow downloading. -->
-        <!-- <dependencies>
+        <dependencies>
           <dependency>
             <groupId>fish.payara.extras</groupId>
             <artifactId>payara-micro</artifactId>
             <version>4.1.1.162</version>
           </dependency>
-        </dependencies> -->
+        </dependencies>
         <executions>
-          <!-- <execution>
+          <execution>
             <id>payara-uber-jar</id>
             <phase>package</phase>
             <goals>
@@ -201,7 +201,7 @@
                 <artifactId>payara-micro</artifactId>
               </executableDependency>
             </configuration>
-          </execution> -->
+          </execution>
           <execution>
             <id>startup-embedded-jetty</id>
             <phase>install</phase>

src/main/java/org/t246osslab/easybuggy/troubles/DeadlockServlet2.java

@@ -156,18 +156,16 @@ private String updateUsers(ArrayList<User> users, Locale locale) {
         int executeUpdate = 0;
         String resultMessage = "";
         try {
-
             conn = DBClient.getConnection();
             conn.setAutoCommit(false);
-            // conn.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
-
             stmt = conn.prepareStatement("Update users set name = ?, phone = ?, mail = ? where id = ?");
             for (User user : users) {
                 stmt.setString(1, user.getName());
                 stmt.setString(2, user.getPhone());
                 stmt.setString(3, user.getMail());
                 stmt.setString(4, user.getUserId());
                 executeUpdate = executeUpdate + stmt.executeUpdate();
+                log.info(user.getUserId() +" is updated.");
                 Thread.sleep(500);
             }
             conn.commit();
@@ -179,12 +177,8 @@ private String updateUsers(ArrayList<User> users, Locale locale) {
             log.error("SQLTransactionRollbackException occurs: ", e);
             rollbak(conn);
         } catch (SQLException e) {
-            if ("41000".equals(e.getSQLState())) {
-                resultMessage = MessageUtils.getErrMsg("msg.deadlock.occurs", locale);
-            } else {
-                resultMessage = MessageUtils.getErrMsg("msg.unknown.exception.occur", new String[] { e.getMessage() },
-                        locale);
-            }
+            resultMessage = MessageUtils.getErrMsg("msg.unknown.exception.occur", new String[] { e.getMessage() },
+                    locale);
             log.error("SQLException occurs: ", e);
             rollbak(conn);
         } catch (Exception e) {

src/main/resources/log4j.xml

@@ -6,7 +6,7 @@
   <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
      <param name="Target" value="System.out" /> 
      <layout class="org.apache.log4j.PatternLayout">
-        <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %5p %c{1} %m%n" />
+        <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %5p %t %c{1} %m%n" />
      </layout>
   </appender>
 
@@ -16,12 +16,12 @@
      <param name="MaxFileSize" value="5MB" /> 
      <param name="MaxBackupIndex" value="5" />
      <layout class="org.apache.log4j.PatternLayout">
-        <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %5p %c{1} %m%n" />
+        <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %5p %t %c{1} %m%n" />
      </layout>
   </appender>
 
   <root>
-    <priority value ="ERROR" />
+    <priority value ="INFO" />
     <appender-ref ref="STDOUT"/>
     <appender-ref ref="FILE"/>
   </root>