动态生成html页面（一）
需求：根据如下三个Model类，动态生成html页面，让用户设置参数，并且要取得数据存数据库。
public class Policy implements Serializable{ // private static final long serialVersionUID = -3934515492869305972L; private String name; private String level; private String display; private List<PolicyParam> params; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getLevel() { return level; } public void setLevel(String level) { this.level = level; } public String getDisplay() { return display; } public void setDisplay(String display) { this.display = display; } public List<PolicyParam> getParams() { return params; } public void setParams(List<PolicyParam> params) { this.params = params; } }public class PolicyParam implements Serializable{ // private static final long serialVersionUID = 1L; private String name; private String policyName; private String valueRange; private String display; private String type; private String tips; private List<Unit> units; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPolicyName() { return policyName; } public void setPolicyName(String policyName) { this.policyName = policyName; } public String getValueRange() { return valueRange; } public void setValueRange(String valueRange) { this.valueRange = valueRange; } public String getType() { return type; } public void setType(String type) { this.type = type; } public String getDisplay() { return display; } public void setDisplay(String display) { this.display = display; } public String getTips() { return tips; } public void setTips(String tips) { this.tips = tips; } public List<Unit> getUnits() { return units; } public void setUnits(List<Unit> units) { this.units = units; } }public class Unit implements Serializable{ // private static final long serialVersionUID = 1L; private String name; private String policyName; private String paramName; private String display; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPolicyName() { return policyName; } public void setPolicyName(String policyName) { this.policyName = policyName; } public String getParamName() { return paramName; } public void setParamName(String paramName) { this.paramName = paramName; } public String getDisplay() { return display; } public void setDisplay(String display) { this.display = display; } }