最近公司的項目在進行國家某行業的安全檢測，涉及到項目安全滲透等方面的問題；

參與項目的滲透等改造，是一個機遇與挑戰，今後對與項目安全等方面會思考更多；

下面說說form表單對象提交，為了防止抓包，後臺做的類型轉化；一個簡單的DEMO思路

1、數據庫對象bean，屬相與數據庫中字段相同，有Integer，Boolean，Double等類型

2、form表單的對象formbean，所有屬性都是String

3、將formbean的值賦值到bean對象，在賦值過程中對數據的安全性（類型轉化的問題）進行判斷，

form對象

 1 package february.week1.safe;
 2
 
 /**   
 3  * Description: form表單的數據類型
 4  * @Package february.week1.safe 
 5  * @author  BIQI IS BEST   
 6  * @date    2018年2月5日 上午10:38:33 
 7  */
 8 public class PersonForm {
 9     
10     private String name;
11     
12     private String sex;
13     
14     private String age;
15     
16     private
 
 String phoneNumber;
17     
18     private String salary;
19 
20     public PersonForm(String name, String sex, String age, String phoneNumber, String salary) {
21         super();
22         this.name = name;
23         this.sex = sex;
24         this.age = age;
25         this.phoneNumber = phoneNumber;
 
26         this.salary = salary;
27     }
28 
29     public PersonForm() {
30         super();
31     }
32     
33     
34     public String getName() {
35         return name;
36     }
37 
38     public void setName(String name) {
39         this.name = name;
40     }
41 
42     public String getSex() {
43         return sex;
44     }
45 
46     public void setSex(String sex) {
47         this.sex = sex;
48     }
49 
50     public String getAge() {
51         return age;
52     }
53 
54     public void setAge(String age) {
55         this.age = age;
56     }
57 
58     public String getPhoneNumber() {
59         return phoneNumber;
60     }
61 
62     public void setPhoneNumber(String phoneNumber) {
63         this.phoneNumber = phoneNumber;
64     }
65 
66     public String getSalary() {
67         return salary;
68     }
69 
70     public void setSalary(String salary) {
71         this.salary = salary;
72     }
73 
74     @Override
75     public String toString() {
76         return "PersonForm [name=" + name + ", sex=" + sex + ", age=" + age + ", phoneNumber=" + phoneNumber
77                 + ", salary=" + salary + "]";
78     }
83     
84 }

後臺對象：

 1 package february.week1.safe;
 2 /**   
 3  * Description: 後臺類型
 4  * @Package february.week1.safe 
 5  * @author  BIQI IS BEST   
 6  * @date    2018年2月5日 上午10:38:33 
 7  */
 8 public class Person {
 9     
10     private String name;
11     
12     private String sex;
13     
14     private Integer age;
15     
16     private String phoneNumber;
17     
18     private Double salary;
19 
20     public Person() {
21         super();
22     }
23 
24     public Person(String name, String sex, Integer age, String phoneNumber, Double salary) {
25         super();
26         this.name = name;
27         this.sex = sex;
28         this.age = age;
29         this.phoneNumber = phoneNumber;
30         this.salary = salary;
31     }
32 
33     public String getName() {
34         return name;
35     }
36 
37     public void setName(String name) {
38         this.name = name;
39     }
40 
41     public String getSex() {
42         return sex;
43     }
44 
45     public void setSex(String sex) {
46         this.sex = sex;
47     }
48 
49     public Integer getAge() {
50         return age;
51     }
52 
53     public void setAge(Integer age) {
54         this.age = age;
55     }
56 
57     public String getPhoneNumber() {
58         return phoneNumber;
59     }
60 
61     public void setPhoneNumber(String phoneNumber) {
62         this.phoneNumber = phoneNumber;
63     }
64 
65     public Double getSalary() {
66         return salary;
67     }
68 
69     public void setSalary(Double salary) {
70         this.salary = salary;
71     }
72 
73     @Override
74     public String toString() {
75         return "Person [name=" + name + ", sex=" + sex + ", age=" + age + ", phoneNumber=" + phoneNumber + ", salary="
76                 + salary + "]";
77     }
78     
79     
80     
81 }

測試的類：

  1 package february.week1.safe;
  2 /**   
  3  * Description: 轉化字段的屬性，並且捕獲異常
  4  *                 form表單提交時候，數據類型不一致的問題，防止滲透
  5  * @Package february.week1.safe 
  6  * @author  BIQI IS BEST   
  7  * @date    2018年2月5日 上午10:38:33 
  8  */
  9 
 10 import java.lang.reflect.Field;
 11 import java.lang.reflect.Method;
 12 import java.util.HashMap;
 13 import java.util.Map;
 14 
 15 public class ChangeFilterType {
 16     
 17     public static void main(String[] args) {
 18         PersonForm personForm = new PersonForm();
 19         personForm.setName("10");
 20         personForm.setSalary("1212123");
 21         personForm.setAge("qwe");
 22         Person person2 = new Person();
 23         changeFilter(personForm,person2);
 24     }
 25     
 26     private static boolean changeFilter(Object objectForm,Object object2){
 27         Map<String, String> map = getObjectFiled(objectForm);
 28         try {
 29             putValueToBean(map,object2);
 30         } catch (Exception e) {
 31             System.out.println(e.toString());
 32         }
 33         System.out.println(object2.toString());
 34         return false;
 35     }
 36     
 37     
 38     /** 
 39      * Description: 獲得屬性的map,以及屬性的值
 40      * @param bean
 41      * @return
 42      * @author  BIQI 2018年2月5日 下午2:22:31
 43      * @return  TreeMap<String,String>  @throws  
 44      */
 45     private static Map<String, String> getObjectFiled(Object bean){
 46         Map<String, String> map = new HashMap<>(30);
 47         Field[] fields = bean.getClass().getDeclaredFields();
 48           for(Field field:fields){
 49 //              System.out.println(field.getName());
 50 //              System.out.println(field.getType().toString());
 51 //              System.out.println(getFieldValueByName(field.getName(),bean));
 52               map.put(field.getName(), (String) getFieldValueByName(field.getName(),bean));
 53           }
 54         return map;
 55     }
 56     
 57     /** 
 58      * Description: 屬性的值
 59      * @param fieldName
 60      * @param bean
 61      * @return
 62      * @author  BIQI 2018年2月5日 上午11:23:15
 63      * @return  Object  @throws  
 64      */
 65     private static Object getFieldValueByName(String fieldName, Object bean) {  
 66            try {    
 67                String firstLetter = fieldName.substring(0, 1).toUpperCase();    
 68                String getter = "get" + firstLetter + fieldName.substring(1);  
 69                Method method = bean.getClass().getMethod(getter, new Class[] {});    
 70                Object value = method.invoke(bean, new Object[] {});    
 71                return value;    
 72            } catch (Exception e) {    
 73                return null;    
 74            }    
 75        }   
 76     
 77     /** 
 78      * Description: 屬性的轉化 值的傳入
 79      * @param treeMap
 80      * @param bean
 81      * @author  BIQI 2018年2月5日 上午11:55:52
 82      * @return  void  @throws  
 83      * @throws Exception 
 84      */
 85     public static void putValueToBean(Map<String, String> treeMap,Object bean) throws Exception{
 86         
 87         Field[] fields = bean.getClass().getDeclaredFields();
 88         // 屬性的長度判斷
 89         if (fields.length!= treeMap.size()) {
 90             System.out.println("轉換的對象不對");
 91             throw new Exception("轉換的對象不對");
 92         }
 93     
 94         for(Field field:fields){
 95             String fieldName = field.getName();
 96             String fieldValue = treeMap.get(fieldName);
 97             String firstLetter = fieldName.substring(0, 1).toUpperCase();    
 98             String setter = "set" + firstLetter + fieldName.substring(1);  
 99             
100             Method method = bean.getClass().getMethod(setter, field.getType());
101             String type = field.getType().toString();
102             try {
103                 if ("class java.lang.String".equals(type)) {
104                     method.invoke(bean,fieldValue);
105                 }
106                 if ("class java.lang.Integer".equals(type)) {
107                     if (null == fieldValue || "".equals(fieldValue)) {
108                         method.invoke(bean,0);
109                         continue;
110                     }
111                     Integer temp = Integer.valueOf(fieldValue);
112                     method.invoke(bean,temp);
113                 }
114                 if ("class java.lang.Double".equals(type)) {
115                     if (null == fieldValue || "".equals(fieldValue)) {
116                         method.invoke(bean,0);
117                         continue;
118                     }
119                     Double temp = Double.valueOf(fieldValue);
120                     method.invoke(bean,temp);
121                 }
122                 //其他的類型if(....){}
123             } catch (Exception e) {
124                 throw new Exception("轉換("+bean.getClass().getName()+")的屬性："+fieldName+" 值"+fieldValue+" 出現問題");
125             }
126         }
127     }
128 
129     
130 }

滲透測試，form對象類型轉換，簡單demo