When a property is implemented with generic type, a conversion
exception is throw ed:
Value is no String (class=java.lang.Integer, value=1)
To reproduce the problem:
public interface GenericEntity<Id> {
public Id getId();
}
public class OptionEntity implements GenericEntity<Integer>, Serializable {
private Integer id;
private String option;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getOption() {
return option;
}
public void setOption(String option) {
this.option = option;
}
}
public class TestBean implements Serializable {
private OptionEntity option = new OptionEntity();
public OptionEntity getOption() {
return option;
}
public void setOption(OptionEntity option) {
this.option = option;
}
public Map<String, Integer> getOptions() {
Map<String, Integer> result = new TreeMap<String, Integer>();
result.put("I", 1);
result.put("II", 2);
result.put("III", 3);
return result;
}
}
<h:form>
<h:selectOneMenu value="#{testBean.option.id}">
<f:selectItems value="#{testBean.options}"/>
</h:selectOneMenu>
</h:form>
