html:checkbox 赋值问题

[limsh_2_14]

<html:checkbox name="proconInputlist" property="protectionAmountHold" value="ON" />

java后台
form 表单

private List<EntrySData> proconInputlist;

public List<EntrySData> getProconInputlist() {
return proconInputlist;
}

public void setProconInputlist(final List<EntrySData> proconInputlist) {
this.proconInputlist = proconInputlist;
}

数据存放
EntrySData
private String protectionAmountHold;

public String getProtectionAmountHold() {
return protectionAmountHold;
}

public void setProtectionAmountHold(String protectionAmountHold) {
this.protectionAmountHold = protectionAmountHold;
}


怎样在checkbox 被选中的情况下 把值赋给 property="protectionAmountHold" 为“ON”
未被选中的情况下 把值赋给 property="protectionAmountHold" 为“OFF”

[limsh_2_14]

架构是struts+spring

[homine]

<html:checkbox name="proconInputlist" property="flagCheckBox" />

private boolean flagCheckBox;
private String protectionAmountHold;

public boolean getFlagCheckBox(){
return flagCheckBox;
}

public boolean setFlagCheckBox(boolean flagCheckBox){
this.flagCheckBox = flagCheckBox;
if(flagCheckBox==true)
setProtectionAmountHold("ON");
else
setProtectionAmountHold("OFF");
}

public String getProtectionAmountHold() {
return protectionAmountHold;
}

public void setProtectionAmountHold(String protectionAmountHold) {
this.protectionAmountHold = protectionAmountHold;
}

[limsh_2_14]

private boolean flagCheckBox;
private String protectionAmountHold;

public boolean getFlagCheckBox(){
return flagCheckBox;
}

public boolean setFlagCheckBox(boolean flagCheckBox){
this.flagCheckBox = flagCheckBox;
if(flagCheckBox==true)
setProtectionAmountHold("ON");
else
setProtectionAmountHold("OFF");
}

请问这一段写在什么里面
jsp里面的<% %>里面
还是javascrip里面
还是action里面