我正在尝试找到正则表达式，如果有一些重复，请保留唯一的表达式并将其余部分放在垃圾表中。 但我得到这个Erro，我不知道它是什么！ 这是我的代码：
public class RegexRemoverMain {
public static void main(String[] args) throws SQLException, ClassNotFoundException{
//Connection Parameters and Connect to Postgres Database
String data = "jdbc:postgresql://localhost:5432/postgres";
Class.forName("org.postgresql.Driver");
Connection conn = null;
//Connect to DB
conn = DriverManager.getConnection(
data, "username", "password");
//statements to get distinct owners
Statement ownerSt = conn.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
//statement to get Image Ids of a user
Statement ownersImagesIdsSt = conn.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
String insertSQL;
//an arraylist to store unique titles+tags reported by user
ArrayList<List<String>> result = new ArrayList<List<String>>();
//list for storing those Ids of a users which are filtered
List<String> filteredIds = new ArrayList<String>();
//list for storing those Ids of a users which are kept
List<String> ids = new ArrayList<String>();
//get the list of all the users
ResultSet distinctOwner = ownerSt.executeQuery("select distinct owner from \"flickrData_bulkUploadedFree\"");
distinctOwner.last();
distinctOwner.beforeFirst();
int count=0;
//RegularExpression Pattern
String theRegex= "((DSC)?(dsc)?(img)?(IMG)?(\\s?)(\\_?)((\\-?))[0-9]{1,9})";
Pattern checkRegex = Pattern.compile(theRegex);
//loop is going through all user's Images and check whether their the titles is one of the patterns if yes, check their title+description which are unique or not
//if yes, we keep them; if not; we throw them away or store in another place
while(distinctOwner.next()){
count = count++;
Statement insertSt = conn.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
//store filtered images
String insertString = "INSERT INTO regexIamges"
+ "( id , owner, descriptio, title, tags) VALUES"
+ "(?,?,?,?,?)";
PreparedStatement preparedStatement = conn.prepareStatement(insertString);
//for each user exist in "flickrData_bulkUploadedFree"
String owner = distinctOwner.getString("owner");
ResultSet ownersImages;
ownersImages = ownersImagesIdsSt.executeQuery("select id, title, tags, descriptio from \"flickrData_bulkUploadedFree\" where owner = '" + owner +"';");
ownersImages.last();
ownersImages.beforeFirst();
//an list of images of a user's with the information about id, title, tags and descriptions in order to find unique Images
ArrayList<List<String>> bulkUploadList = new ArrayList<List<String>>();
while(ownersImages.next()){
String id = ownersImages.getString("id");
String title = ownersImages.getString("title");
String tags = ownersImages.getString("tags");
String description = ownersImages.getString("descriptio");
Matcher regexMatcher = checkRegex.matcher(title);
if (regexMatcher.find()){
if(regexMatcher.group().length() != 0){
List<String> rowsList = new ArrayList<String>();
rowsList.add(id);
rowsList.add(title);
rowsList.add(tags);
rowsList.add(description);
bulkUploadList.add(rowsList);
bulkUploadList.add(rowsList);
}
}
else{
insertSQL = "INSERT INTO \"regBulkfreeFlickrData\" SELECT * FROM \"flickrData_bulkUploadedFree\" where id ='"+id+"';";
insertSt.addBatch(insertSQL);
}
}
HashSet<String> hashSet = new HashSet<String>();
for(List<String> item : bulkUploadList) {
String title, tags, id, desc, uniqueString;
title = item.get(1);
tags = item.get(2);
id = item.get(0);
desc = item.get(3);
uniqueString = (tags + "#" + desc).trim().toUpperCase();
System.out.println(item);
if(!hashSet.contains(uniqueString)) {
result.add(item);
hashSet.add(uniqueString);
insertSQL = "INSERT INTO \"regBulkfreeFlickrData\" SELECT * FROM \"flickrData_bulkUploadedFree\" where id ='"+id+"';";
insertSt.addBatch(insertSQL);
} else {
// System.out.println("Filtered element " + uniqueString + "id " + id);
filteredIds.add(id);
preparedStatement.setString(1, id);
preparedStatement.setString(2, owner);
preparedStatement.setString(3, desc);
preparedStatement.setString(4, title);
preparedStatement.setString(5, tags);
preparedStatement.addBatch();
}
}
preparedStatement.executeBatch();
preparedStatement.close();
insertSt.executeBatch();
insertSt.close();
}
}
，错误是这样的：
Exception in thread "main" java.sql.BatchUpdateException: Batch entry 0 INSERT INTO regexIamges( id , owner, descriptio, title, tags) VALUES('4292220054.0000000000000','23352125@N07','NoValue','IMG_2720','NoValue') was aborted. Call getNextException to see the cause.
at org.postgresql.jdbc2.AbstractJdbc2Statement$BatchResultHandler.handleError(AbstractJdbc2Statement.java:2743)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1928)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:405)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2892)
at uzh.textmining.RegexRemoverMain.main(RegexRemoverMain.java:116)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
，表格是：
CREATE TABLE "RegexImages"
(id numeric,
owner character varying(254),
descriptio character varying(254),
title character varying(254),
tags character varying(254),
PRIMARY KEY (id)
)
答案 0 :(得分：3)
感谢hasnae; 我使用了try catch，我得到的是我的代码中的tableName与数据库中的表名不匹配。 另一个问题是表的名称：我将所有字母更改为小写以解决所有错误。
答案 1 :(得分：2)
看似相似的问题：https://stackoverflow.com/a/39227828/755804
（扰流： 对于单个INSERT语句，值的总数（即，列数乘以行数）不得超过32767。 您可以将32767除以列数以获得每个SQL INSERT语句的最大行数。）