I want to insert the contents of a Person bean into my database table person using Spring's SqlParameterSource . One of the attributes in Person class is an a java.util.List
which is causing org.springframework.jdbc.BadSqlGrammarException
.
The Person
class is as follows:
package learn.spring.model;
import java.util.List;
public class Person {
private String name;
private int age;
private List<String> affiliations;
@Override
public String toString() {
return "Person [name=" + name + ", age=" + age + ", affiliations="
+ affiliations + "]";
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public List<String> getAffiliations() {
return affiliations;
}
public void setAffiliations(List<String> affiliations) {
this.affiliations = affiliations;
}
}
The code that inserts this Person bean into db is:
String query="insert into person (name, age, affiliations) values (:name,:age,:affiliations)";
SqlParameterSource paramSource = new BeanPropertySqlParameterSource(p);
KeyHolder key = new GeneratedKeyHolder();
System.out.println(template.update(query, paramSource, key));
The bean I am trying to insert is: Person [name=rickesh, age=22, affiliations=[1, 2, 3]]
I am getting the following exception:
Exception in thread "main" org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [insert into person (name, age, affiliations) values (?,?,?, ?, ?)]; nested exception is java.sql.SQLException: Column count doesn't match value count at row 1
at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:98)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:603)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:843)
at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.update(NamedParameterJdbcTemplate.java:288)
at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.update(NamedParameterJdbcTemplate.java:270)
at learn.spring.main.ApplicationRunner.createPerson(ApplicationRunner.java:46)
at learn.spring.main.ApplicationRunner.main(ApplicationRunner.java:38)
Caused by: java.sql.SQLException: Column count doesn't match value count at row 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1734)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2019)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1937)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1922)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:233)
at org.springframework.jdbc.core.JdbcTemplate$3.doInPreparedStatement(JdbcTemplate.java:845)
at org.springframework.jdbc.core.JdbcTemplate$3.doInPreparedStatement(JdbcTemplate.java:1)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:587)
... 5 more
With some hit and trial I am able to understand that Person.affiliations
is causing this exception. How can I use SqlParameterSource to insert a List into database table? Please advice.
Your approach is not correct.
EDIT: You get an error because Spring cannot interpret that you want to store list in single row.
You cannot store a list of strings in a single row. Convert your private List<String> affiliations;
into a comma separate list and it will work.
Use this to generate comma separated list from List:
String delim = "";
for (Item i : list) {
sb.append(delim).append(i);
delim = ",";
}
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